Perform the indicated operation and simplify. Assume all variables represent positive real numbers.
A. 9 + 9
B. 81 + 
C. 9 + 
D. 9 - 
Answer: C
Mathematics
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Solve the equation.5y4 + 8y2 - 4 = 0
A. ±
, ± 
B. 
, -2
C. ±
, ±j
D. - 
, 2
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Solve the problem.Let f(x) = cos x, g(x) = x - ?/3, and h(x) = 2x. Find f(g(?/3)).
A. 0 B. 2 C. -1 D. 1
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Graph the equation.y = (x - 4)2 
A. 
B. 
C. 
D. 
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Tell whether the graph of the function opens up or down.P(x) = (x + 2)2
A. down B. up
Mathematics