Simplify the algebraic expression 15 x y - 13 + 4 x + 3 y + x y + 21

Consider the table below. x y -1 -5 0 5 1 11 2 13 3 11 complete the standard form equation representing the quadratic relationship displayed above, where a, b, and c are constants.

Acircular garden with radius of 8 feet is surrounded by a circular path with a width of 3 feet. what is the approximate area of the path alone? use 3.14 for π

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)