please solve using grade 11 math. using Nt=No (1+r)^t and etc

IUnCLIC 4. A population of 25 fruit flies is released in the science lab. The population quadruples in 5 days. What is the percent increase each day? What is the population after 12 days? 10 5. On average, as people grow older, they sleep fewer hours during the night. The amount of sleep that your grandfather gets has decreased by 1.5% per year since 1980 when he slept 8.5 hours per night on average. Write a model showing the number of hours your grandfather sleeps per night. How many hours of sleep did he get in 2000? / 10