The answer is y = 0.02 (0.05)^x
Exponential functions follow the form y = ab^x.
a is the y intercept when x is at 0. Because the last part, b^x will just be 1 since any number raised to 0 is 1.
b is the multiplier, and it’s raised to how many times it’s being multiplied.
So like you said, it’s being multiplied by 0.5. b = 0.05. And a=0.02.