Following are three rows from a frequency distribution table. Using interpolation, what is the percentile rank for X = 18?

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?

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

Hi, can anyone show me how to do this problem? 100 points for this. in advance