Hello my name is summer im using my sisters account so how are yall

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?

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left