Find S30 HELPP. 10 points!
An arithmetic sequence has Si = -7 and S3 = 0.

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]

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.