Pleasee someone help me slove this

In exponential growth functions, the base of the exponent must be greater than 1,how would the function change if the base of the exponent were 1? how would the fiction change if the base of the exponent were between 0and 1

What is the inverse of the function f(x) = 2x + 1?

Acompany made a profit of 75000 over a period of 6 years on an initial investment of 15000 what is the annual roi