The human body generates about 400 btus of body heat per hour while active. if an office that is 18 ft × 38 ft × 12 ft has 12 workers, how many btus per cubic foot do they produce in 5 hours? (to the nearest tenth)
a) 0.2 btus/ft3
b) 0.6 btus/ft3
c) 1.5 btus/ft3
d) 2.9 btus/ft3

(01.03 mc) which of the following is a step in simplifying the expression x multiplied by y to the power of 2 over x to the power of negative 3 multiplied by y to the power of 3, the whole to the power of negative 4. select one: a. x to the power of negative 4 multiplied by y to the power of negative 2, the whole over x to the power of negative 7 multiplied by y to the power of negative 1. b. x to the power of negative 4 multiplied by y to the power of negative 8, the whole over x to the power of 12 multiplied by y to the power of negative 12. c. x to the power of negative 4 multiplied by y to the power of negative 8, the whole over x to the power of negative 3 multiplied by y to the power of 3. d. x to the power of negative 4 multiplied by y to the power of negative 2, the whole over x to the power of negative 3 multiplied by y to the power of 3.