Question 10 (1 point) Solve the following exponential equation algebraically. 5(2+1) - 24 Express you answer to the nearest hundredth. Question 11 (1 point) A young man has $450 in an investment that earns 8.5% per year, compounded annually. A function that models the growth of the deposit is y = 450(1. 085) where y is the value of the investment, in dollars, and x is the number of years since the deposit was made. Determine how long, to the nearest year, that it will take for the investment to be worth at least $7000. as it must haQuestion 12 (1 point) The half-life of chemical substance is approximately 9 years. Initially there is 80 grams of the chemical substance, the amount of chemical substance remaining, A, at any time during the process can be modelled by the function A = 80( 2) " where t is the approximate age of the sample, in years. Algebraically determine how long, to the nearest tenth of a year, until there are only 2 grams left. Question 13 (1 point) Jarrod claims that log (xy) = 2loge + 2logy. Do you agree or disagree? Justify your answer with the help of the laws of logarithms to explain your answer. s it must be