☐ 1. The number of chicken sandwiches sold, C(t), in sandwiches per hour, at a local fast food franchise throughout the day is given by the following table. Hours past opening 0 36 9 12 No. of sandwiches sold 1 26 22 30 44 Use a left Riemann sum to estimate the value of represent? 12 fort C(t)dt, and what does this value

The formula for the amount A in an investmentaccount with a nominal interest rate r at any timet is given by A(t)=a(e)rt, where a is the amount ofprincipal initially deposited into an account thatcompounds continuously. Prove that the percentageof interest earned to principal at any time t can becalculated with the formula I(t)=ert1.