Billy drove 1 half of the 7.5 miles between his house and the mall. how many miles did he drive?

Me figure out the process to determine x you appreciate it : )

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm