What is 80+47?

a. 172
b. 98
c. 127
d. 231

i think it's c. correct me if i'm wrong.

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

Hi my sisters and brothers can tell me the answer because i don’t understand the question

What is the binomial expansion of (2x-3)^5