Could you solve the questions please? THANK YOU VERY MUCH!!!

Question 4 Answer the following parts. (a) Write down a formula for the amount of money you would have in your account after t years if it started at $1000 and the account pays 2.5% annual interest compounded monthly. (b) If you buy a car for $20,000 and it loses half its value every year when will the car be worth $3,000? (c) A population is known to grow exponentially. If it starts at 100 and is 150 after 3 months when will the population be 300? Question 5 We consider deer and wolves that live in a national park. (a) The population of deer oscillates cyclically over a 10 year span. Assume that in the year t = 3, the deer population reached its maximum value of 4000 and in the year t = 8 it was at its minimum value of 3000. Write down an appropriate sinusoidal model for the deer population D(t) in year t. (b) The park's wolf population in year t is given by the equation W05) = 4(t 4.5)2 + 400. Determine the time interval between the years [0, 10] when the wolf population is over 375