Please help with the two problems on the top I’d really appreciate it please hurry thank you

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 businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?