Math help again please?

Question

final one then some hw help

ffind y intercept for

f(x)=-3^(x+2) - 7

Answer 1

The y-intercept occurs when x=0.

f(0) = y = -3^(0 + 2) - 7

y = -3^2 - 7

y = -9 - 7 = -16

So the y-intercept is at the point (0,-16).

Answer 2

At y intercept x=0

replace in function

f(0)=-3^(0+2)-7

     = 9-7

      =2