Question

Please help me!!
(I WILL MEDAL/FAN)
For f(x) = 0.01(2)^x, find the average rate of change from x = 3 to x = 8.

Answer 1

average rate of change from x = 8 to x = 3 can be expressed with the formula

averate rate of change = [f(8)-f(3)]/(8-3)

Answer 2

f(8)-f(3)/5 ??? @Vocaloid sorry was talking to my mum

Answer 3

almost done, now we need to find f(8)-f(5)

what is f(8)?

Answer 4

umm..... 8??*_* (Confused)

Answer 5

f(x) = 0.01(2)^x, right?
f(8) = ?

Answer 6

f(8) means find f(x) when x = 8

Answer 7

f(8)=.01(2)^8

Answer 8

right, can you type that out onto a calculator please and tell me what you get?

Answer 9

2.56

Answer 10

right! now, can you find f(3) using the same pattern?

Answer 11

.08

Answer 12

right!

f(8) = 2.56
f(3) = 0.08

so what is f(8)-f(3)?

Answer 13

2.48

Answer 14

right!

final step:

[f(8)-f(3)]/5 = ?

Answer 15

.496

Answer 16

yup, we're done!

Answer 17

thanks youuuu!!! :)