Could someone explain things like radicals with variables that are raised to powers. plz, Ill brainliest you. Thanks hers an example:

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

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?