I really need help pls!

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

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x