In what situations is it helpful to use a sample of a population? Mark all that apply.

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.

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.