Question

The function below shows the number of students of a school who enrolled for cooking classes. Let f(x) represent the total number of students who enrolled for the classes after x years:
f(x) = 11(1.35)x

The average rate of change in the number of students who enrolled for cooking classes from the first to the fifth year is ________students per year.

Round your answer to the nearest whole number.

Answer 1

Gfcchffigdddjy

Answer 2

Evaluate x at 5

Answer 3

Do the same at 1

Answer 4

Subtract

Answer 5

F(5)-f(0)
-------------------
5

Answer 6

umm im not good at f(x) and g(x) things or f(g)(x) things im sorry

Answer 7

its okay :) do u know anyone who can help?

Answer 8

yes @johnweldon1993

Answer 9

@Here_to_Help15

Answer 10

thnx!

Answer 11

yup i just messaged john for u

Answer 12

ightt thanks lizzy, i appreciate it

Answer 13

You do have the correct formula up there

\[\large \frac{f(b) - f(a)}{b - a}\]

The only bad wording of the problem is where they say the first to the 5th year

That (in my understanding) would mean from the year x = 0 to the year x = 4

Answer 14

Okay so using the formula, what are my f(b) and f(a)? 0 through 4?

Answer 15

Correct, you can make your 'b' = 4 and your 'a' = 0

or the other way too, doesn't really matter, you end up with the same answer regardless

Answer 16

So your f(b) would be what that function equals when x = 4 etc...

Answer 17

Okay thanks alot! that helped!