Write an algebraic expression that models the situation. jenny had $143, but she is spending $23 per month.

Find the balance at the end of 4 years if 1000 is deposited at the rate of

The length of a rectangular piece of land is 92 yards more than three times its width. the perimeter is 760 yards. find its dimensions.

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1