Hello, can you please help me with those two questions from the CALC book from the chapter of indefinite integrals

Question One:

A company installs a new computer that is expected to generate savings at the rate of 20,000e-".2 dollars per year, where t is the number of years that the computer has been in operation. (a) Find a formula for the total savings that the computer will generate during its first t years. S(0 = (b) If the computer originally cost $450,000, when (in years) will it "pay for itself"? (Round your answer to one decimal place.) YrA flu epidemic hits a college community, beginning with five cases on day & = 0. The rate of growth of the epidemic (new cases per day) is given by the following function (t), where t is the number of days since the epidemic began. (!) = 22 0.05t (a) Find a formula for the total number of cases of flu in the first t days. F(t)= (b) Use your answer to part (a) to find the total number of cases in the first 20 days. (Round your answer to the nearest whole number.) F(20) = cases