When the scale factor is one what is the ratio of the side length of the side opposite angle a and the length of the hypotenuse

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

How do i do this activity, is appreciated

Ten times the square of a non-zero number is eqaul to ninety times the number