Subtract and simplify.
- 
A. 
B. 
C. 
D. 
Answer: D
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Write the compound statement in words.Let p: Students are happy. q: Teachers are happy.~(p ? ~q)
A. It is not the case that students are happy or teachers are not happy. B. Students are not happy or teachers are not happy. C. It is not the case that students are happy and teachers are not happy. D. Students are not happy and teachers are not happy.
Find cos(A - B).cos A = 
and sin B = - 
, where 
and 
.
A. 
B. 
C. 
D. - 
Solve the problem.An open-top rectangular box has a square base and it will hold 108 cubic centimeters (cc). Each side of the base has length x cm, and the box has a height of y cm. Express the surface area S as a function of the length x of a side of the base.
A. S(x) = 
+ x2
B. S(x) = 
+ x2
C. S(x) = 432 + x2
D. S(x) = 
+ x2
Two search-and-rescue teams leave base camp at the same time, looking for a lost child. The first team, on horseback, heads north at 2 mph, and the other team, on foot, heads south at 1 mph.How long will it take them to search a distance of 9 miles between them?
A. 5.5 hours B. 3 hours C. 4 hours D. 3.5 hours E. 4.5 hours