***no spreadsheets please! I need help with a) through d) of this question***

1) $10,000 is invested for 5 years in an account that follows a(t)=e0.02t+0.005t2 a) Find the accumulated value at the end of the 5 years. b) Find the effective annual rate of return in each of the 5 years c) Find the average annual effective rate of return over the five year period d) Find an expression for the force of interest as a function of t, and evaluate this at t=3.25