Suppose that 6 people sitting in a enclosed room are each generating about 400 BTUs of body heat per hour. If the room is 20 ft × 15 ft × 10 ft, how many BTUs per cubic foot do they produce in 5 hours?

A) 3 BTUs/ft3
B) 4 BTUs/ft3
C) 5 BTUs/ft3
D) 6 BTUs/ft3

What is the simplified form of 7 √x • 7 √x • 7 √x • 7 √x?

Suppose a least-squares regression line is given by modifyingabove y with caret equals 4.302 x minus 3.293. what is the mean value of the response variable if xequals20?

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?