9. Nathan's bedroom has a width of 13 feet a height of 9 feet and a length of 14 feet. The level of insulation, i, is 10 and the exposure, e, is 18 because the outside
wall faces south. For this room, Nathan should purchase an air conditioner with a BTU rating of about 5,000 BTUS.

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

Suppose 38 lbs of coffee beans are required to produce 2 lbs of farmer's coffee. how many lbs of coffee beans are required to produce 309 lbs of farmer's coffee?

Ben and cam are scuba diving. ben is 15.815.8 meters below the surface of the water. cam is 4.24.2 meters above ben. what is cam's position relative to the surface of the water? choose 1 choose 1 (choice a) a 11.611.6 meters above the surface of the water (choice b) b 11.611.6 meters below the surface of the water (choice c) c 2020 meters above the surface of the water (choice d) d 20 meters below the surface of the water