The cost to fill a car's tank with gas and get a car wash is a linear function of the capacity of the tank. The costs of a fill-up and a car wash for three different customers are shown in the table. Write an equation for the function in slope-intercept form. Then, find the cost of a fill-up and a car wash for a customer with a truck whose tank size is 22 gallons. Tank size (gal) Total cost ($) (2) f (z) 11 21.45 15 28.25 17 31.65 Of (x) = 1.60x + 2.25; Cost for truck = $37.45 Of (x) = 1.70x + 2.75; Cost for truck = $40.15 O f (x) = 1.50r + 3.00; Cost for truck = $36.00 Of (x) = 0.59x + 1.62; Cost for truck = $14.60 1 2 3 4 6 7 8 9 10

The cost to fill a car's tank with gas and get a car wash is a linear function of the capacity of the tank. The costs of a fill-up and a car wash for three different customers are shown in the table. Write an equation for the function in slope-intercept form. Then, find the cost of a fill-up and a car wash for a customer with a truck whose tank size is 22 gallons. Tank size (gal) Total cost ($) (2) f (z) 11 21.45 15 28.25 17 31.65 Of (x) = 1.60x + 2.25; Cost for truck = $37.45 Of (x) = 1.70x + 2.75; Cost for truck = $40.15 O f (x) = 1.50r + 3.00; Cost for truck = $36.00 Of (x) = 0.59x + 1.62; Cost for truck = $14.60 1 2 3 4 6 7 8 9 10

Calculus: Early Transcendentals

8th Edition

ISBN:9781285741550

Author:James Stewart

Publisher:James Stewart

Chapter1: Functions And Models

Section: Chapter Questions

Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...

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Fire departments in your county have an average benchmark of 6 minutes on a fire call from the time the 911 operator takes the call to the time the first firefighter arrives on the scene. This 6-minute average includes a 1-minute call handling time from when 911 gets the call to when they notify the fire department. There is a 1-minute time from when the firefighters are notified to when they get out of the fire station. Then they have 4 minutes from when they leave the station to when they arrive on scene. Two fire departments in your county are being compared. From one fire department, a random sample of 10 calls has a mean of 6.51 minutes total with a standard deviation of 0.26 minutes. From the other fire department, a random sample of 11 calls shows a mean of 6.42 minutes with a standard deviation of 0.19. Construct a 90% confidence interval for the difference in the mean call time between the two fire departments. Fire departments in your county have an average benchmark of 6…
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