Question

Define an exponential function, f(x), which passes through the points (0,125) and (3,8). Enter your answer in the form a*b^x

Answer 1

Explanation:

put (0, 125) in a*b^x, we get a = 125, then put (3,8) in 125*b^x, we get 125*b^3=8

b^3=8/125

b=2/5

then the answer is 125*(2/5)^x