What do equations and expressions have in common

A temperature dropped 2F every hour for 6. what was the total number of degrees the temperature changed in the 6 hours?

I could really use an easy answer, I can't find any I understand. I need to use a linear system of equations to answer. The school that Kevin goes to is selling tickets to a field trip.

Which ordered pair is a solution to the equation: y - 3 = x+2? a) (5,10) b) (0,0) c) (7,6) d) (10,5)

Which pair is equivalent? • 9/2 and 1 1/3. 2 3/7 & 17/7.15/8 & 1 8/7

Which one is greater 100dm or 100km

Whats 1+100,920x829+93

Write an expression using the distributive property that can be used to find the quotient of 126:7

If 1/5BC=1/5DE, then BC=DE

If we have 6,000 movies and 3/5 were borrowed. how many movies were borred

What are two numbers that multiply to give you - 7200 and add to give you - 276