Plz help me with this thanks

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 are “like terms”? why can we only add like terms?

What is the measure of the smallest angle in the diagram? 15 29 32 45