An 8ft length of 4 inch wide crown molding costs $13. How much will it cost to buy 40 ft of crown molding?

Liam's parents are driving three times as fast as liam is biking, but they left later than he did. if his parents caught up with him two hours after he left, how much later than liam did they leave?

Find percent notation for 0.008 0.008=

Donald has x twenty-dollar bills and 11 ten-dollar bill. how much money does donald have? write your answer as an expression.