What is another word for grouping in math

What is the remainder when 2872 is divided by 76? a) 51 b) 57 c) 60 d) 63

What is always true about a positive integer raised to a negative odd power?

`if you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain. ''.