Graph the function.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Simplify the expression. The result will be one of sin x, cos x, tan x, cot x, sec x, csc x.
A. cos x B. sin x C. csc x D. sec x
Mathematics
Solve the problem.An airplane took 5 hr to fly 600 mi against a head wind. The return trip with the same wind took 2 hr. Find the speed of the plane in still air.
A. 90 mph B. 210 mph C. 300 mph D. 120 mph
Mathematics
Use the laws of exponents to simplify each expression using positive exponents only. Assume all variables represent nonzero real numbers.82 ? 83
A. 646 B. 645 C. 86 D. 85
Mathematics
Simplify, where possible.7(7a - 4)
A. 49a - 4 B. 49a - 28 C. -196a D. 7a - 28
Mathematics