Let y=4x-7 what would be y when x is 8

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

Find the roots of the equation below. x^2 - 6 + 9 = 0

Asquare picture with sides of 32 inches is to be mounted on a square mat with sides of 52 inches. find the area of the mat that will remain uncovered by the picture.