Question

Evaluate the function f(x)=4*7^x for x=-1 and x=2. Show your work!

Answer 1

With this function you are given 2 x's and all we have to do is plug those X's into the function so 

f(-1)=4*7^-1

7^-1 is 1/7 
times 4 = 4/7

f(2)=4*7^2
7^2=49 *4 = 196