Ineed with number 7. any will be appreciated. you!

Trish receives $450 on the first of each month. josh receives $450 on the last day of each month. both trish and josh will receive payments for next four years. at a discount rate of 9.5 percent, what is the difference in the present value of these two sets of payments?

Describe the relationship between the angles of similar triangles and the sides of similar triangles

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab