The table below shows the population of a fictional California Gold Rush Town named Lehi in the yearsafter its peak population in 1880.Year188018901900191019201930Population8100340223491556681312For the purpose of this problem, let P represent the population of Lehi t years after 1880 (t=0represents 1880). The new table is:1020304050P(t)8100340223491556681312Use your calculator to determine the exponential regression equation that models the set of data above.Round the "a" value to two decimals, and round the "b" value to two decimals. Use the indicatedvariables and proper function notation.P(t) =Based on the your regression model, what is the percent decrease per year?Find P(55). Round your answer to the nearest whole number.P(55) =Interpret your answer by completing the following sentence. Be sure to use units in your answer.%3D"The population of Lehiafter 1880 was aboutHow long did it take for the population of Lehi to reach 270 people? Round your answer to the nearestwhole number.P(t) = 270 when t =Interpret your answer by completing the following sentence. Be sure to use units in your answer.Inafter 1880, the population of Lehi was aboutHow long did it take for the population of Lehi to drop by half? Round your answer to the nearest wholenumber.P(t) has halved when t =%3D

Answered: Image /qna-images/answer/85b267b4-5f57-4f82-9c26-1a66879cdaa8.jpg

Answered: Use your calculator to determine the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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You begin mowing lawns for extra money you plan to charge $7 for each lawn. You spend $40 on gas and other supplies. Model the profit. a. make a data table b. graph the data c. find the slope d. find the rate of change e. p-s model and s-i form f. speculate the meaning of the y-int.
Use the time/tip data from the table below, which includes data from New York City taxi rides. (The distances are in miles, the times are in minutes, the fares are in dollars, and the tips are in dollars.) Find the regression equation, letting time be the predictor (x) variable. Find the best predicted tip for a ride that takes 22 minutes. How does the result compare to the actual tip amount of $5.05? Distance 1.40 0.68 0.49 1.32 18.00 6.00 2.00 8.00 12.30 6.30 4.80 7.80 2.46 1.89 0.00 0.00 Time Fare Tip 12.71 1.65 1.80 27.00 11.00 25.00 36.80 9.80 16.30 0.00 1.96 1.50 ... 2.47 D 18.00 14.30 4.29 The regression equation is y = y=+x. (Round the y-intercept to two decimal places as needed. Round the slope to four decimal places as needed.) The best predicted tip for a ride that takes 22 minutes is $ (Round to the nearest cent as needed.) How does the result compare to the actual tip amount of $5.05?
Use the cost model screenshot attached to answer the question. Thanks for the help. Use the weekly cost model to estimate the total weekly cost when the weekly demand is 147. Round to the nearest dollar. $
please help me answer this for my data analysis class
Use the cost model screenshot attached to answer the question. Thanks for the help. What is k? Round to the nearest integer.
Use the revenue model attached in screenshot to answer the question. Thanks! Estimate the weekly revenue when the weekly demand is 177. Round to the nearest dollar. $
A teacher wants to form a linear regression equation to predict a student's score on the final based on the number of hours they spent studying for it. Final scores are in percents. y=2x + 60 R-Squared = 0.65 What does the y-intercept mean in terms of the situation? O If a student doesn't study for the final, their score on the final would be 60%. O If they doesn't study for the final their score would be 65%. O The student should study for the final. O A ripe Mango. O If a student doesn't study for the final, their score would be 2%.
A teacher wants to form a linear regression equation to predict a student's Score on the final based on the number of hours they spent studying for it. Final scores are in percents. y=2x + 60 R-Squared = 0.65 %3D What does the slope mean in terms of the situation? O For each additional hour a student studies, their grade on the final increases by 2%. O For each additional 2 hours a student student studies, their score on the final increases by 1%. O Every hour a student studies, increases their score on the final. O Always choose C. O The more a student studies, the better they will do on the final.
Use the cost model screenshot attached to answer the question. Thanks for the help. What is m? Round to 1 decimal place.
. Fill in the "Years since 1970" column for the data to the right. Make a scatter plot in Excel of the data using Years since 1970 and Total Waste in Millions of Tons (Title your graph and label your axes appropriately). How would you best describe the trend? Add an exponential regression model to the data. Write the equation below. Is it a good fit? Explain how you know. Based on the exponential model, what is the growth rate per year? Explain the meaning of the growth rate in the context of the data. Using the exponential model, make a prediction of how much plastic will be in landfills (and the ocean gyres) by Year Years since 1970 Total Waste in Millions of Tons 1970 0 249 1980 10 798 1985 15 1200 1990 20 1740 1995 25 2440 2000 30 3390 2005 35 4600 2010 40 6060 2015 45 7820 Do you think recycling alone will solve this problem (See Q11 and Q12)? What are some of the challenges in recycling plastic that might hinder the world from recycling all plastic…

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