Answered: Miles Car Maintenance Driven Age (yr.)…

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter7: Percents

Section7.5: Percent Of Change

Problem 1C

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Question

The manager of the Bayville police department motor pool wants to develop a forecast model
for annual maintenance on police cars, based on mileage in the past year and age of the cars. The
following data have been collected for eight different cars: a. Using Excel, develop a multiple regression equation for these data.
b. What is the coefficient of determination for this regression equation?
c. Forecast the annual maintenance cost for a police car that is 5 years old and will be driven
10,000 miles in 1 year.

Miles
Car
Maintenance
Driven
Age (yr.)
Cost
$1,200
1,400
1,820
900
16,320
7
15,100
18,500
10,200
9,175
12,770
8,600
7,900
8
8.
3
650
1,150
3
7
875
3.
900

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