Which equation represents an inverse variation?

y = 2x
y =
y =
y = –5x

What is (28 + 7 + 6 + 3) x 1/2 show your work

If i have one apple and give you the apple, how many apples do i have?

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?