Use the function below to find f(-4)
f(x) =2^x
a. 1/8
b. -8
c. -16
d. 1/16

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.