Mrs. kennedy is buying pencils for each of 315 students at hamiton elementary. the pencils are sold in bixes if 10s. how can she use rounding to decide how many pencils to buy?

7x+8y=-18, 4x-9y=-3 solve the system of equations

If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b

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.