Find the exact value by using a half-angle identity.sin 22.5°
A. 
B. - 
C. 
D. - 
Answer: C
Mathematics
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Solve.The average cost per tape, in dollars, for a company to produce x sports videotapes is given by the functionA(x) = 
for x > 0
Graph the function on the interval (0, ?) and complete the following:A(x) ? 
as x ? ?.
A. 
A(x) ? 16 as x ? ?.
B. 
A(x) ? 0 as x ? ?.
C. 
A(x) ? 11 as x ? ?.
D. 
A(x) ? 1 as x ? ?.
Mathematics
Rationalize the denominator. Simplify, if possible.
A. 
B. 
C. 
D. 
Mathematics
Evaluate the expression.52 - 43 + 42 - 53
A. 52 B. -52 C. 148 D. -148
Mathematics
Convert to decimal notation.5.92 × 10-4
A. 0.00592 B. 0.0000592 C. -592,000 D. 0.000592
Mathematics