Exponential Functions Lad Assessment

Which values of a and b in the exponential function y = a · b× would result in the following graph?

a. a = -3, b = 2 c. a = 3, b = 2
b. a = -1, b = 3 d. a = 2, b = -3

It costs a homeowner $2.00 to rent a set of hand tools plus an additional $2.00 per hour for the rental. the function that models the cost c of renting tools for h hours is c=2h+2 identify the solution that has the correct graph and the correct slope