What is the area of a circle with a radius of 7 inches

7x+8y=-18, 4x-9y=-3 solve the system of equations

Each equation given below describes a parabola. which statement best compares their graphs? x = 2y^2 x = 8y^2

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible