Monomial , binomial, trinomal​

Sasha invests $1000 that earns 8% interest compounded annually. write a function that describes the value, v, of the investment after t years.

Me find the measure to side c and the process to solve the problem you appreciate it : )

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)