7) (5 points) Find the amount of money that results from 1000 dollars in- vested at 4 percent compounded quarterly after the period of 6 months. 8) (15 points) The number N of bacteria present in a culture at time , in hours, obeys the law of exponential growth N(t) = 100001 a) What is the number of bacteria at { = 0 hours? b) When will the number of bacteria double? Give the exact solution in the simplest form. Do not evaluate