Translate the problem into a mathematical sentence using e as your variable name. roy bought 16 CDs in December. of those, 7 were world music the rest were electronic music. how many electronic music discs did he buy?

Divide. reduce the answer to lowest terms.5 2/3 ÷ 3 1/9

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?

Solve for x where 0 equation: cot^2x+2cotx+1=0