Write in scientific notation.0.000867
A. 8.67 × 10-4
B. 8.67 × 10-3
C. 8.67 × 104
D. 8.67 × 10-5
Answer: A
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Solve the problem. Use an annual percentage rate table if necessary.Sarah Yost took out a 48-month fixed installment loan of $17,000 to open a gift shop. She began making monthly payments of $423.05. Sarah's business does better than expected and instead of making her 12th payment, Sarah decides to repay her loan in full. How much interest will Sarah save (use the actuarial method)?
A. $2205.29 B. $1907.97 C. $1926.35 D. $1872.84
Solve the problem.Last year, 340 million music CDs were purchased by 112 million households in the United States. On average, how many CDs were purchased in each household?
A. 170 CDs B. 340 CDs C. 3.4 CDs D. 3 CDs
Solve the problem.A rectangular piece of cardboard measuring 18 inches by 49 inches is to be made into a box with an open top by cutting equal size squares from each corner and folding up the sides. Let x represent the length of a side of each such square. For what value of x will the volume be a maximum? If necessary, round to 2 decimal places.
A. 21.18 in. B. 18.32 in. C. 36.64 in. D. 4.01 in.
DeMoivre's Theorem can be used to find reciprocals of complex numbers. Recall from algebra that the reciprocal of x is 
, which can be expressed as 
.
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Use this fact, along with DeMoivre's Theorem, to find the reciprocal of the number below.
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What will be an ideal response?