Question

The fuel economy of a car, measured in miles per gallon, is modeled by the function f(s) = -0.009s² + 0.699s + 12 where s represents the speed of the car, measured in miles per hour. What's the fuel economy of the car when it travels at an average of 20 miles an hour?

a. -10.02 miles per gallon

b. 20 miles per gallon

c. 26.63 miles per gallon

d. 22.38 miles per gallon

Answer 1

Answer:

C is the correct answer.

Step-by-step explanation:

The given point is (8,17) and it lies on the graph of the function. It means that if the car is driven at an average of 8 miles per hour, the fuel economy is 17 miles per gallon. Therefore the correct option is C.

Also: the coordinate pairs are in the form of (s,f(s)).

Answer 2

$\huge{\underline{\mathtt{\blue{♕A}\green{N}\pink{S}\red{W}\purple{E}\orange{R♕:–}}}}$

Option C