Lamar has been saving $6 each week. Today he spent $90 of the savings, and he now has $48 left. For how many weeks has he been saving?

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.