The graph shows exponential function f(x)=a(b)^x, where a and b are positive integers. What are the values of a and b for this function?

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x

the first option i believe

step-by-step explanation:

60: 45 =12: 9 =4: 3 so the answer is 4: 3