Question

Which exponential function has an x-intercept
A) f(x)=100^x-5 -1
B) f(x)=3^x-4 -2
C) f(x)=7^x-1 +1
D) f(x)=8^x+1 -3

Answer 1

I suppose you thought the following:

A) f(x) = 100^(x-5) - 1
B) f(x) = 3^(x-4) - 2
C) f(x) = 7^(x-1) + 1
D) f(x) = 8^(x+1) - 3

In that case the correct answers are A), B) and D)

Good luck!!!