Hi can someone please help

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?

25 ! the line of best fit is h = 5a + 86. predict the height at age 16. show your work.

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)