
Concept explainers
a.
To complete the table which is provided in the question.
a.

Answer to Problem 51E
The complete table is obtained as:
DVDs | Cost (dollars) | Amount left (dollars) |
1 | ||
2 | ||
3 | ||
4 |
Explanation of Solution
Given information:
The total yearly rental budget is $200 and each rental cost is $4.
Calculation:
From, the table, it can be observed that in Cost (dollars) column, total rental cost is written which is a product of number of DVDs and rental cost of each DVD and Amount left (dollars) column is obtained by subtracting the cost of DVDs from $200.
Hence, the complete table is obtained as:
DVDs | Cost (dollars) | Amount left (dollars) |
1 | ||
2 | ||
3 | ||
4 |
b.
To write the variable expression for cost of r rentals.
b.

Answer to Problem 51E
The variable expression for cost of r rentals is obtained as:
Explanation of Solution
Given information:
The total yearly rental budget is $200 and each rental cost is $4.
Calculation:
From, the table, it can be observed that in Cost (dollars) column, total rental costC is written which is a product of number of DVDs, r and rental cost of each DVD that is $4.
Hence,
The variable expression for cost of r rentals is obtained as:
c.
To write the variable expression for amount of the budget left after r rentals.
c.

Answer to Problem 51E
The variable expression is obtained as:
Explanation of Solution
Given information:
The total yearly rental budget is $200 and each rental cost is $4.
Calculation:
From, the table, it can be observed that in Cost (dollars) column, Amount left (dollars) column is obtained by subtracting the total cost of DVDs, C from $200.
Total cost is obtained as:
Hence,
The variable expression is obtained as:
d.
Determine the number of DVD which can be rented before the $200 is spent.
d.

Answer to Problem 51E
The number of DVD which can be rented before the $200 is spent is 50.
Explanation of Solution
Given information:
The total yearly rental budget is $200 and each rental cost is $4.
Calculation:
Therefore,
The variable expression for cost of r rentals is obtained as:
Since,
So,
Hence,
The number of DVD which can be rented before the $200 is spent is 50.
Chapter 1 Solutions
ELEMENTARY+INTERMEDIATE ALGEBRA
Additional Math Textbook Solutions
University Calculus: Early Transcendentals (4th Edition)
A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
Elementary Statistics
Thinking Mathematically (6th Edition)
College Algebra with Modeling & Visualization (5th Edition)
Elementary Statistics (13th Edition)
- Nasir invested $415 into a savings account that earns 2.5% annual interest. Tiana invested $295 into a saving account that earns 6.8% annual interest. Who will have more money after 7 years? How much more money will the person have?arrow_forwardSolve for the variable. 62k = 7776k- 8arrow_forwardSolve questionsarrow_forward
- Patterns in Floor Tiling A square floor is to be tiled with square tiles as shown. There are blue tiles on the main diagonals and red tiles everywhere else. In all cases, both blue and red tiles must be used. and the two diagonals must have a common blue tile at the center of the floor. If 81 blue tiles will be used, how many red tiles will be needed?arrow_forwardFind the values of n, if the points (n + 1, 2n), (3n, 2n + 3) and (5n + 1,5n) are collinear. Find the value of k that the four points (4,1,2), (5, k, 6), (5,1,-1) and (7,4,0) are coplanar. Find the value of r if the area of the triangle is formed by the points (-3,6),(4,4) and (r,-2) is 12 sq units. Find the volume of tetrahedron whose vertices are A(1,1,0), B(-4,3,6), C(-1,0,3) and D(2,4,-5).arrow_forward- Consider the following system of linear equations in the variables a,b,c,d: 5a-3b 7c - 2d = 2 2ab 2c+ 5d = -3 → (*) 4a 3b 5d = 3 6a b+2c+ 7d = −7 (a) Solve the system (*) by using Gauss elimination method. (b) Solve the system (*) by using Cramer's rule method.arrow_forward
- Solve for a 25 55 30 a=?arrow_forward9:41 … 93 Applying an Exponential Function to Newton's Law of Cooling 60. Water in a water heater is originally Aa ← 122°F. The water heater is shut off and the water cools to the temperature of the surrounding air, which is 60°F. The water cools slowly because of the insulation inside the heater, and the value of k is measured as 0.00351. a. Write a function that models the temperature T (t) (in °F) of the water t hours after the water heater is shut off. b. What is the temperature of the water 12 hr after the heater is shut off? Round to the nearest degree. c. Dominic does not like to shower with water less than 115°F. If Dominic waits 24 hr. will the water still be warm enough for a shower? Mixed Exercises ger-ui.prod.mheducation.comarrow_forwardPlease use the infinite series formula and specify how you did each step. Thank you.arrow_forward
- 8) Solve the given system using the Gaussian Elimination process. 2x8y = 3 (-6x+24y = −6arrow_forward7) Solve the given system using the Gaussian Elimination process. (5x-4y = 34 (2x - 2y = 14arrow_forward33 (a) (b) Let A(t) = = et 0 0 0 cos(t) sin(t) 0-sin(t) cos(t)) For any fixed tЄR, find det(A(t)). Show that the matrix A(t) is invertible for any tЄ R, and find the inverse (A(t))¹.arrow_forward
- Algebra and Trigonometry (6th Edition)AlgebraISBN:9780134463216Author:Robert F. BlitzerPublisher:PEARSONContemporary Abstract AlgebraAlgebraISBN:9781305657960Author:Joseph GallianPublisher:Cengage LearningLinear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage Learning
- Algebra And Trigonometry (11th Edition)AlgebraISBN:9780135163078Author:Michael SullivanPublisher:PEARSONIntroduction to Linear Algebra, Fifth EditionAlgebraISBN:9780980232776Author:Gilbert StrangPublisher:Wellesley-Cambridge PressCollege Algebra (Collegiate Math)AlgebraISBN:9780077836344Author:Julie Miller, Donna GerkenPublisher:McGraw-Hill Education





