Antoine is using special blackboard paint to paint a blackboard on a classroom wall. the wall is 8 meters long and 3 meters tall. one can of blackboard paint covers 6 square meters. how many cans of blackboard paint does antoine need?

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Lv beethoven software supplies customized software to a managed healthcare system. lv beethoven software's costs for the software is $1,723,000. lv beethoven software sells the software to the healthcare system for $3,816,981.10. overhead expenses are estimated at 47% of the selling price. what is lv beethoven software's net profit to the nearest dollar?

Bobs burgers bam has a special deal of 4 hamburgers for $6. at that rate, how much should it cost to buy 3 hamburgers?