If f(x) =2x +7\5 then find the value of f(4) +f(-4)

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

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?

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is