Question

Aidan started taking flying lessons two years ago. He pays an annual flight school fee of $895 and a gasoline fee of $30 each time he takes a flying lesson. The function below can be used to calculate the total yearly flight school fee, f (x), in dollars.

f (x) = 895 + 30x, where x represents the number of times he took a flying lesson during the year.

Last year he paid $2,065 as a total flight school fee. For how many lessons did he pay a gasoline fee (x)?

Answer 1

plug in f(x) = 2065, then solve for x

f(x) = 895 + 30x

2065 = 895 + 30x

2065 - 895 = 30x

1170 = 30x

30x = 1170

x = 1170/30

x = 39

So he took 39 lessons

Answer 2

ok thanks

Answer 3

np