Whats the rational expression for 3/x^2-3x+2 + 7/x^2-1

The two-way frequency table below shows data on playing a sport and playing a musical instrument for students in a class.

#12 find the value of x. #13 find the value of the variable.

Cherie measures and records the lengths and sizes of the same style of a sandal found at a shoe store. which equation can be used to determine the approximate shoe size, s, for a foot length of x inches? s = x – 2 s = 2x – 10 s = x + 6 s = 2x + 4