A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
13th Edition
ISBN: 9780135183885
Author: Rick Billstein, Shlomo Libeskind, Johnny Lott, Barbara Boschmans
Publisher: PEARSON
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Chapter 2.3A, Problem 14A
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2. A microwave manufacturing firm has determined that their profit function is P(x)=-0.0014x+0.3x²+6x-355 , where is the number of microwaves sold annually. a. Graph the profit function using a calculator. b. Determine a reasonable viewing window for the function. c. Approximate all of the zeros of the function using the CALC menu of your calculator. d. What must be the range of microwaves sold in order for the firm to profit?
Chapter 2 Solutions
A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
Ch. 2.1 - Explain why commands and questions are not...Ch. 2.1 - Explain how to write the negation of a quantified...Ch. 2.1 - a. Describe under what conditions a disjunction is...Ch. 2.1 - In an email address line, a coma or a semicolon is...Ch. 2.1 - If a statement and its converse are both true,...Ch. 2.1 - Table 6 shows a situation used to motivate the...Ch. 2.1 - Is the inverse of an implications converse the...Ch. 2.1 - A student says that an implication can some time...Ch. 2.1 - A student says that it is impossible to determine...Ch. 2.1 - A student says that all poodles are dogs is true...
Ch. 2.1 - A student wants to know how to find the truth...Ch. 2.1 - Write an explanation for a seventh grader showing...Ch. 2.1 - Analyze the following argument that was presented...Ch. 2.1A - Determine which of the following are statements...Ch. 2.1A - Use quantifiers to make each of the following...Ch. 2.1A - Use quantifiers to make each of equation in...Ch. 2.1A - Write the negation of each of the following...Ch. 2.1A - Identify the following as true or false. a. For...Ch. 2.1A - Prob. 6ACh. 2.1A - a. Complete the following truth table, (1) (2) (3)...Ch. 2.1A - If q stands for This course is easy and r stands...Ch. 2.1A - Decide on the truth values of each of the...Ch. 2.1A - Write the negation of each statement in exercise...Ch. 2.1A - For each of the following, is the pair of...Ch. 2.1A - Prob. 12ACh. 2.1A - Write each of the following in symbolic form if p...Ch. 2.1A - For each of the following implications, write the...Ch. 2.1A - Complete the truth table below to determine...Ch. 2.1A - Write a statement logically equivalent to the...Ch. 2.1A - Investigate the validity of each of the following...Ch. 2.1A - For each of the following, form a conclusion that...Ch. 2.1A - Write the following in if-then form. a. Every...Ch. 2.1A - Use De Morgans Laws to write a negation of each of...Ch. 2.1B - Determine which of the following are statements...Ch. 2.1B - Use the quantifiers to make each of the following...Ch. 2.1B - Use the quantifiers to make each equation in...Ch. 2.1B - Write the negation of each of the following...Ch. 2.1B - Identity the following as true or false. a. For...Ch. 2.1B - a. If you know that p is true, what can you...Ch. 2.1B - Complete a truth table for (pq).Ch. 2.1B - If q stands for You said goodbye and r stands for...Ch. 2.1B - Decide on the truth value of each of the following...Ch. 2.1B - Write the negation of each statement in exercise...Ch. 2.1B - For each of the following, is the pair of...Ch. 2.1B - Use the Euler diagram to describe Megan as...Ch. 2.1B - Write each of the following in symbolic form if p...Ch. 2.1B - For each of the following implications, state the...Ch. 2.1B - Iris makes the true statement If it rains, then I...Ch. 2.1B - Investigate the validity of each of the following...Ch. 2.1B - For each of the following, form a conclusion that...Ch. 2.1B - Write each of the following in if-then form. a....Ch. 2.1B - Use De Morgans laws to write a negation of each of...Ch. 2.2 - Prob. 1MCCh. 2.2 - Prob. 2MCCh. 2.2 - Prob. 3MCCh. 2.2 - Explain why {} has as an element and also as a...Ch. 2.2 - Prob. 5MCCh. 2.2 - Explain the difference between a subset and a...Ch. 2.2 - Explain the difference between the symbols and ....Ch. 2.2 - Explain the difference between equivalent and...Ch. 2.2 - Suppose a penny, nickel, dime, and quarter are on...Ch. 2.2 - If a set has 255 proper subsets, how many elements...Ch. 2.2 - Explain why the word finite was used in the...Ch. 2.2 - Define less than or equal to in a way similar to...Ch. 2.2 - Prob. 13MCCh. 2.2 - Draw a Venn diagram depicting A. Shade A. What is...Ch. 2.2 - A set has elements in an arithmetic sequence...Ch. 2.2 - A set of 100 people on a tour include only men and...Ch. 2.2 - A student asks if A is a subset of B and B is a...Ch. 2.2 - A student states that given any two sets A and B,...Ch. 2.2 - Prob. 19MCCh. 2.2 - A students says that every time he adds one...Ch. 2.2 - Prob. 21MCCh. 2.2 - A students says that any set that uses 3 dots...Ch. 2.2 - A students says that n()=1, since it has one...Ch. 2.2 - Use the School Book Page on p.59 to tell how...Ch. 2.2 - Review Problems If p is false and q is true, find...Ch. 2.2 - Review Problems Find the truth value for each...Ch. 2.2 - Review Problems Complete the following truth...Ch. 2.2A - Write the following sets using the listing roster...Ch. 2.2A - Rewrite the following using mathematical symbols,...Ch. 2.2A - Which of the following pairs of sets can be placed...Ch. 2.2A - Prob. 4ACh. 2.2A - Prob. 5ACh. 2.2A - Which of the following represent equal sets?...Ch. 2.2A - Find the cardinal number of the each of the...Ch. 2.2A - If U is the set of all college students and A is...Ch. 2.2A - Suppose B is a proper subset of C. a. If n(C)=8,...Ch. 2.2A - Prob. 10ACh. 2.2A - Prob. 11ACh. 2.2A - Prob. 12ACh. 2.2A - Identify all the possible proper subset...Ch. 2.2A - Indicate which symbol, or , makes each of the...Ch. 2.2A - Indicate which symbol, or _, makes each of the...Ch. 2.2A - Assessment Answer each of the following. If your...Ch. 2.2A - Use the definition of less than to show each of...Ch. 2.2A - On a certain committee there are seven members,...Ch. 2.2A - Name two infinite sets that are equivalent but not...Ch. 2.2A - Write an argument to show that the set of even...Ch. 2.2A - Draw a Venn diagram showing the relationship...Ch. 2.2A - Draw a Venn diagram depicting the Beta club, the...Ch. 2.2A - If the set of officers of the Beta Club is...Ch. 2.2B - Prob. 1ACh. 2.2B - Prob. 2ACh. 2.2B - Which of the following pairs of sets can be placed...Ch. 2.2B - How many one-to-one correspondences exist between...Ch. 2.2B - Prob. 5ACh. 2.2B - Prob. 6ACh. 2.2B - Prob. 7ACh. 2.2B - Prob. 8ACh. 2.2B - Suppose AB. a. Explain why n(A) could equal 0. b....Ch. 2.2B - Prob. 10ACh. 2.2B - Prob. 11ACh. 2.2B - If a set has 16 subsets, how many elements are in...Ch. 2.2B - Identify all the possible proper subset...Ch. 2.2B - Indicate which symbol, or , makes each of the...Ch. 2.2B - Answer each of the following. If your answer is...Ch. 2.2B - Use the definition of lessthan to show each of the...Ch. 2.2B - How many ways are there to stack an ice-cream cone...Ch. 2.2B - Prob. 18ACh. 2.2B - Write an argument showing that the set of whole...Ch. 2.2B - Draw a Venn diagram showing the members of...Ch. 2.2B - In a state swim meet, if the set of swimmers in...Ch. 2.2B - Prob. 22ACh. 2.2B - Prob. 23ACh. 2.2B - Prob. 24ACh. 2.3 - Prob. 2MCCh. 2.3 - Prob. 3MCCh. 2.3 - Prob. 5MCCh. 2.3 - Prob. 6MCCh. 2.3 - Describe a real- life situation that can be...Ch. 2.3 - A student asks, If A={a,b,c} and B={b,c,d}, why...Ch. 2.3 - Prob. 9MCCh. 2.3 - A student argues that adding two sets A+B, and...Ch. 2.3 - Prob. 11MCCh. 2.3 - Hugo says that the definition of AB is the set of...Ch. 2.3 - Prob. 13MCCh. 2.3 - Describe the contrapositive of the contrapositive...Ch. 2.3 - Write a conclusion for each of the following...Ch. 2.3 - Prob. 16MCCh. 2.3 - Find the number of elements in the following sets:...Ch. 2.3 - Prob. 18MCCh. 2.3 - Prob. 19MCCh. 2.3 - Prob. 20MCCh. 2.3A - Prob. 1ACh. 2.3A - Prob. 2ACh. 2.3A - Prob. 3ACh. 2.3A - If BA find a simpler expression for each of the...Ch. 2.3A - Prob. 5ACh. 2.3A - Prob. 6ACh. 2.3A - For each of the following conditions, find AB. a....Ch. 2.3A - Prob. 8ACh. 2.3A - Prob. 9ACh. 2.3A - Prob. 10ACh. 2.3A - Prob. 11ACh. 2.3A - Prob. 12ACh. 2.3A - a. If A has three elements and B has two elements,...Ch. 2.3A - If n(A)=4, n(B)=5, and n(C)=6, what is the...Ch. 2.3A - Prob. 15ACh. 2.3A - Prob. 16ACh. 2.3A - Assessment Given that the universe is the set of...Ch. 2.3A - Prob. 18ACh. 2.3A - In a sorority with 40 members, 18 take...Ch. 2.3A - In Paulettes bicycle shop, 50 bicycle were...Ch. 2.3A - The Red Cross looks for three types of antigens in...Ch. 2.3A - John has applied for the registrars job at small...Ch. 2.3A - Three announcers each try to predict the winners...Ch. 2.3A - Prob. 24ACh. 2.3A - When the Titanic sank, the following data about...Ch. 2.3A - Two families, each having three children, are at a...Ch. 2.3A - Let A={x,y} and B={a,b,c}.Find each of the...Ch. 2.3A - For each of the following, the Cartesian product...Ch. 2.3B - Assessment If W={0,1,2,3,.......},...Ch. 2.3B - Prob. 2ACh. 2.3B - Prob. 3ACh. 2.3B - If XY, find a simpler expression for each of the...Ch. 2.3B - Prob. 5ACh. 2.3B - Prob. 6ACh. 2.3B - For each of the following conditions, find BA. a....Ch. 2.3B - Prob. 8ACh. 2.3B - Prob. 9ACh. 2.3B - Prob. 10ACh. 2.3B - In a police bulletin, it was reported that a...Ch. 2.3B - Assessment a. If n(AB)=23, n(AB)=9, and n(B)=12,...Ch. 2.3B - The equation AB=AB and a similar equation for AB...Ch. 2.3B - Prob. 14ACh. 2.3B - Fill in the Venn diagram with the appropriate...Ch. 2.3B - Prob. 16ACh. 2.3B - Prob. 17ACh. 2.3B - A pollster interviewed 600 university seniors who...Ch. 2.3B - In a survey of 1000 investors, it was determined...Ch. 2.3B - In a survey of 150 students, 90 were taking...Ch. 2.3B - Prob. 21ACh. 2.3B - A poll of 150 people determined that 130 had...Ch. 2.3B - Assessment At the end of a tour, several guides...Ch. 2.3B - Tell whether each of the following is true or...Ch. 2.3B - Prob. 25ACh. 2.CR - Write an example of a statement and an example of...Ch. 2.CR - Explain the difference between the following two...Ch. 2.CR - Which of the following are statements? a. 3+5=9 b....Ch. 2.CR - Negate each of the following; a. No women smoke b....Ch. 2.CR - Write the converse, inverse and contrapositive of...Ch. 2.CR - Use the truth table to show that pqqp,Ch. 2.CR - Construct truth tables for each of the following....Ch. 2.CR - Prob. 8CRCh. 2.CR - Prob. 9CRCh. 2.CR - Write each of the following in if-then format. a....Ch. 2.CR - Prob. 11CRCh. 2.CR - Prob. 12CRCh. 2.CR - Prob. 13CRCh. 2.CR - Prob. 14CRCh. 2.CR - Prob. 15CRCh. 2.CR - Prob. 16CRCh. 2.CR - a. If D={t,h,e} and E={e,n,d}, show one possible...Ch. 2.CR - Prob. 18CRCh. 2.CR - If AB, which of the following are always true?...Ch. 2.CR - Tell whether each of the following is true or...Ch. 2.CR - Prob. 22CRCh. 2.CR - Decide whether each of the following is always...Ch. 2.CR - Prob. 24CRCh. 2.CR - If n(A)=3, n(B)=4 and n(C)=2, find n((AB)C)Ch. 2.CR - Case Eastern Junior College awarded 26 varsity...Ch. 2.CR - According to a student survey, 16 students liked...Ch. 2.CR - Prob. 28CRCh. 2.CR - Heidi has a brown pair and grey pair of slacks; a...Ch. 2.CR - Prob. 30CRCh. 2.CR - Prob. 31CRCh. 2 - NOW TRY THIS a. Use truth tables to prove Theorem...Ch. 2 - NOW TRY THIS Build a truth table to determine when...Ch. 2 - Prob. 3NTCh. 2 - Prob. 4NTCh. 2 - Prob. 5NTCh. 2 - Prob. 6NT
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