Jessica had $20 to spend on two pens. after buying them she had $16.how much did each pen cost?

20 ! need which shows a difference of squares? 10y^2-4x^2 16y^2-x^2 8x^2-40x+25 64x^2-48x+9

The coordinate grid shows points a through k. which points are solutions to the system of inequalities listed below? 2x+ ys 10 2x 4y < 8 oa c, d, k o e, f. g, j oa, c, d, h, k oe, f. g, h, j

The table represents a function f(x). what is f(3)? a.-9 b.-1 c.1 d.9