A farm in Canada has 228 alpacas. After 8 years, the alpaca population decreased to 186 alpacas. The function f (t)= 228 (0.975)^t models the population of alpacas in the Canadian farm as a function of time in years. How many alpacas will there be in 20 years?

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field