What is the equation of the line written in general form? I need the answer ASAP

Option 1: $30 an hour plus a nonrefundable deposit of $50 option 2: $20 an hour plus a nonrefundable deposit of $75 kyle is renting a jetski for the day. if he can rent the jetski in one hour increments, what is the minimum number of hours must he rent the jetski for option 2 to be a better deal then option 1?

Ineed to learn how to solve this problem

What is the logarithmic function modeled by the following table? x f(x) 9 2 27 3 81 4