Question

Evaluate the function f(x)=4 x 7^x for x=-1 and x=2.

Answer 1

put in x=-1 into the function so f(-1)= 4 (-1) 7^(-1) n u get the value for it

Answer 2

How do i get the value for it im not good at algebra at all.

Answer 3

the valve is this: 4 (-1) 7^(-1)
so what is 4*(-1) and what is 7^(-1)?

Answer 4

-4 and -7

Answer 5

-4 is right but 7^(-1) is actually 1/7

Answer 6

okay so the answer is 4(-4) 7^(1/7) ?

Answer 7

Hmm no, the answer is 4 (-1) 7^(-1) so it is -4/7

Answer 8

Oh ok

Answer 9

Try the second part plz