16ax + 4x^2 +16a^2 HELP

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

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)

What is the slope of the line that has an equation of y equals x -3