Question

(I only need a solution for question 1B)Scenario: Pretend that in a certain city the number of new cases of COVID was reported to be 800 new cases on Sunday. Let’s pretend that the number of new cases grows by 15% on Monday, grows by 5% on Tuesday, and then falls 10% on Wednesday, and finally falls again 10% on Thursday.Question: What is the total net change from Sunday to Thursday as a percent? (don’t round for accuracy)

Answer 1

Step-by-step explanation:

1a).

Number of cases on Monday: 800*115% = 920

Tuesday = 920*105% = 966

Wednesday = 966*90% = 869.4

Thursday = 869.4*90% = 782.46

1b) Total net change from Sunday to Thursday:

(782.46 - 800)/800 = -0.021

Answer: Percentage decrease = 2.19%