Please answer and explain​

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?

What is the solution of the systems of equations? y=2/3x+3 x=-2

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.