Can someone help me number 19 20 21 and number 22

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 is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

Aquadrilateral has exactly one pair of parallel sides. which name best describes the figure?