How wide is a rectangular strip of land with length 3/4 mi and area 1/2 squared mi? then find the perimeter of the rectangular strip of land

Solve the system of equations y= 3/2 - 1, -x+ y =-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?

The given diagram shows the parts of a right triangle with an altitude to the hypotenuse. using the two given  measures, find the other four.