How is the y-intercept .72 for this problem

Question

What is the y-intercept of r(x)=.76^x -2

-2 is not raised to a power like x is btw, it's subtracting 2

The answer is .72.. but I have no idea how it is this??

Answer 1

The y-intercept is where x = 0.

r(x) = 0.76^x - 2

r(0) = 0.76⁰ - 2 = 1 - 2 = -1 ≠ 0.72

(Note that 0.76⁰ = 1)

Either r(x) is not stated correctly, or the answer of 0.72 is wrong.