What is the distance between (–2 and one-half, –3) and (1, –3)? –3 and one-half units
–1 and one-half units
1 and one-half units
3 and one-half units

The function ƒ is defined by ƒ(x) = (x + 3)(x + 1). the graph of ƒ in the xy-plane is a parabola. which interval contains the x-coordinate of the vertex of the graph of ƒ?

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

What expression is equivalent to (84+16)