Simplify this 6r+3(2r+1)

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two

Plz hurry finals a paper cup in the shape of an inverted cone is 8 inches tall and has a radius of 1.5 inches. how much water can the cup hold? use 3.14 for pi. round the answer to the nearest tenth. a) 12.6 cubic in. b) 18.8 cubic in. c) 37.7 cubic in. d) 56.5 cubic in.

Find the vertex for the parabola given by the function ƒ(x) = −3x2 − 6x.