Prove n! > = 2^n-1 for all n in the naturals

Three times the sum of a number and seven is negative thirty-six. what is the number?

Find the slope of the line passing through a pair of points

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.