Simplify.
A. 
B. 63x(x + 7)
C. 
D. 
Answer: A
Mathematics
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Provide an appropriate response.The solution of 
? 0 is
A. -5 ? x < -4, x > 2. B. x ? -5, -4 ? x ? 2. C. x ? -5, -4 < x < 2. D. x ? -4, x > 2. E. x = -5, x > 2.
Mathematics
Solve.
+ 
= - 
A. 27 B. -27 C. -28 D. empty set solution
Mathematics
Suppose a traveler wanted to visit a museum, an art gallery, and the state capitol building. 45-minute tours are offered at each attraction hourly from 10 a.m. through 3 p.m. (6 different hours). Solve the problem, disregarding travel time.In how many ways could the traveler schedule all three tours before 1 p.m.?
A. 6 B. 1 C. 3 D. 9
Mathematics
Evaluate.
when x = 10 and y = 5
A. 20 B. 90 C. 2 D. 15
Mathematics