Wis the midpoint for st. tw= 6x-7 and st=8x+10. solve for x to find sw and st

Draw the line of reflection that reflects △abc onto triangle δ a'b'c'

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?

Ineed to know the answer to this algebra question.