Ray has $30 saved and saves two dollars a week ago has $90 and spent four dollars a week when will they had the same amount of money saved

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.

3/4 = c/36 i need with this fraction proble.

The area of a square floor on a scale drawing is 64 square centimeters, and the scale drawing is 1 centimeter: 3 ft. what is the area of the actual floor? what is the ratio of the area in the drawing to the actual area? the area of the actual floor is square feet. the ratio of the area in the drawing to the actual area is 1 square centimeter: square feet.