Agroup of 11 friends ordered four pizzas to share. they divided the pizzas up evenly and all ate the same amount. express in decimal form the proportion of a pizza that each friend ate.

Solve the system of equations. y= 2x y= x^2 - 15

Need on this geometry question. explain how you did it.

For the quadratic function [tex]y=(x+4)^2-1[/tex] , do the following: a) rewrite the function in the standard form, b) rewrite the function in intercept form, c) find the vertex, d) find the y-intercept, e) find the x-intercepts.