How many terms does the polynomial x^2 y^2 have

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.

Anyone know these questions? i need ,.

Which of the following is best modeled using a linear equation y=ax+b, where a is less than 0?