Question

Find the derivative of f at x.

Answer 1

f(x) = 7x + 8; x = 5

Answer 2

Is it 35? I feel like this is to easy & I'm just not seeing it.

Answer 3

7(5)+8 =43

Answer 4

simple subt.

Answer 5

@darth take "derivative"

Answer 6

Are you asked to take a limit? if f(x)=7x+8 then f(x)'=7
If you plug in your value of "5" and take the derivative you get 0.

I don't fully understand your question.

Answer 7

43 isnt one of the answer choices

Answer 8

What are your choices?

Answer 9

7?

Answer 10

I did the same thing first, I plugged then 5 in then solved it & got 43 but then it wasnt one of my choices.

Answer 11

A. 40
B. 8
C. 35
D. 7

Answer 12

D.

Answer 13

7

Answer 14

i's 7.

Answer 15

@darth better

Answer 16

Then asked for the derivative of f(x), I belvie the question is worded wrong.

Answer 17

but what does the x=5 has to do with it?

Answer 18

I don;t know, I didnt type the question.

Answer 19

nothing! the derivative of f doesn't depend on x. that what it means