Question

1.Suppose that the function f(x) = 5x + 3 represents the number of cars that drive by in x minutes. How many cars will drive by in 10 minutes?

a. 80
b. 53
c. 50
d. 35

Answer 1

f(x) = 5x + 3, where x is number of minutes and y = f(x) is number of cars.

Given: x = 10 minutes.

Plugin in 10 in place of x and solve for y.

y = 5x + 3

y = 5(10) + 3

y = 50 + 3

y = 53

Answer: B. 53 cars

//Hope it helps.