pls help with algebra homework

Question

help with this question pls

Give the starting value a, the growth factor for the given exponential function.

Q=3*2^t/10-1

I solved a, but what is b?

Thank you

Answer 1

Q = 3(2)^{t/10 - 1} = 3[2^t/10][2^-1] = (3/2)(2^1/10)^t = A(B)^t, where A = 3/2 = initial amount and B = 2^1/10 = growth factor