Question 19 {2 points} Statistics Canada has been tracking the number of farms inAlberta. In Zll, there were 43 234 farms _ Since that time, the number of farms has decreased at an average rate of 1.2% per year. a} State an exponential equation that could be used to model the number of farms , F, in Alberta, t years after 21311. {I mark} b} Using your equation, determine the number of farms in Alberta in 21:84. (1 mark] Question 18 (4 points) Algebraically solve the exponential equations below. You must show all your work for full marks. (2 marks each) a) (64) 2x-5 1 512 1 b ) 27 (243 3x-7 = 817-2