Question

Given the exponential function f(x) = 5(2)^x, evaluate f(-2)

Answer 1

5/4

Answer 2

sub the x value of -2 into the equation gives 5/4 ok?

Answer 3

Look,
2 ^ -2 = 1/(2)^2
= 1/4
Multiplying by 5,
Answer is 5/4.
Understood?

Answer 4

Thanks!!!I understand it now :)