I need to find what is the value of x

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

What is the equation of a line passing through (-6,5) and having a slope of 1/3

Percent increase and decrease. original number: 45 new number: 18