The width of a rectangle is 9 units less than it length l. write an expression that shows how wide the rectangle is in terms of l.

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?

Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction

What is 617.3 miles and each gallon of gas the car can travel 41 miles select a reasonable estimate of the number of gallons of gas karl used.