Question

Attached Below

Answer 1

Evaluate f(x) for the first and fifth years. In other words, evaluate the function for x = 1 and for x = 5.
Then subtract the values and divide by 4.

Answer 2

49.3 - 14.85 = 34.47

Answer 3

Correct so far.
That is the difference between year 5 and year 1.
Now to get the yearly average, you need to divide by 5 - 1 = 4.
34.47/4 = ?
Then round off to a whole number.

Answer 4

9

Answer 5

Correct.

Answer 6

Thank you so much! :))

Answer 7

You're welcome.