The problem that follows refers to triangle ABC.
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If 
and 
cm, find a.
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Apply the rules regarding the use of significant digits.
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A. 23 cm
B. ?24 cm
C. 19? cm
D. 18? cm
E. 20? cm
Answer: E
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Find the sum of the terms of the arithmetic sequence.1, 3, 5, 7, . . ., 45 n = 23
A. 1058 B. 1104 C. 552 D. 529
Evaluate.If f(x) = -5x2 - 7 and g(x) = x + 5, evaluate (f - g)(-3).
A. 55 B. -44 C. -60 D. -54
An investor has $48,000. She wants to put twice as much in bonds as she puts in stocks. The amount invested in bonds is 
. The amount invested in stocks is 
. A model of this situation is 
. Find the amount to put in each investment.
A. $16,000 in bonds; $32,000 in stocks B. $36,000 in bonds; $12,000 in stocks C. $12,000 in bonds; $36,000 in stocks D. $32,000 in bonds; $16,000 in stocks E. none of these
Use the half-angle formula to simplify the given expression.
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A. ??cos |2x| B. ??cos |8x| C. ??cos |16x| D. ??cos |32x| E. ?cos |4x|