The sales tax on a TV set that costs $450 is $31.50. Find the percent of Sales Tax.

An air conditioning system can circulate 350 cubic feet of air per minute. how many cubic yards of air can it circulate per minute?

Asquare picture with sides of 32 inches is to be mounted on a square mat with sides of 52 inches. find the area of the mat that will remain uncovered by the picture.

Me find the value of x each figure.