5. A3] A new wood stain loses 7.2% of its colour every year in a city that experiences a lot of hot, sunny days. What percent of colour will a fence in this city have 10 years after being stained. (Sequence or Series)6. A4] Dwayne invests $36 375.13 today to save for a car he will buy in 4 years. His investment earns interest at a rate of 3.6% per year, compounded monthly. a. Determine how much Dwayne will have to spend on his car in 4 years. b. How much interest will he earn on his investment? 7. A4] Suki just purchased a new car. Her monthly payment is $450 per month and was finance at 1.8% per year, compounded monthly for 6 years. How much was the original price of the car if she did not have a down payment