#4 please

accumuldeu vdiu ul SU at time t = 4. (b) For the $5000 invested in time t = 1, find the amount of interest earned during the third year of investment, i.e., between times t = 3 and t = 4. 4. It is known that a(t) if of the form at2 + bt + c. If $100 invested at time 0 accumulates to $300 at time 2 and $700 at time 4 , find the accumulated value at time 10 of $100 invested at time 5. Chapter 1 Section 1.3 The effective rate of interest