Which number is less than -2 4/5 but greater than -3 1/5

a -3 1/2
b -3 2/3
c -2 1/2
d -2 7/8

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.