Math question for school

Question

What are the horizontal asymptote and y-intercept for the graph of this function f(x) = 2^-x + 7?

Answer 1

y intercept = 8 or the point (0,8) f(0) = 2^0 + 7 =1+ 7= 8

asymptote = y=7

2^-x approaches a limit of 0 as x approaches infinity