Please help me with those two questions, thank you!

1. Suppose money accumulates using the accumulation function a(t) = 1 + 0.044t² where t is in years.

Calculate the effective rate of interest in the 6th year. Write your answer as a decimal to 4 significant digits.

2. Suppose that money accumulates according to the accumulation function a(t) = 1 + 0.08t + 0.01t² Find the force of interest at time 3.. Write your answer as a decimal to 4 significant digits.