They are together, please help with it

Question 6 The spread of a flu virus on a college campus is modeled by y = 14 4:9090. , where y is the number of students infected after t days. 5,000 Part A How many students are infected after 8 days? BIU X X 2 15px V BV Characters used: 0 / 15000 Part B How many days will it take before half of the student population is infected? BIU X X 2 15 px v Characters used: 0 / 15000