3.8 ÷ 0.2 please answer

Click on the graphic until you find the right quotient. (36xa - 30xb) ÷ (-6x2)

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=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?