A) Solve the following equations for the value of the variable. Then substitute your answer into the original equation to ensure your answer is correct.
b) a.
20 - r = 50
c) b. -(10 - 1) = -18
d) c. 5= -5 + 2n

Which of the following is a proper fraction? a. 9⁄8 b. 5⁄6 c. 7⁄3 d. 4⁄2

Sum is 17 and their difference is 3

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?