You purchase a car for $20,000. It depreciates 30% each year. Which formula calculates how much your car will be worth in 10 years?

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.

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4

Which will form a composite function?