Simplify the expression.
2 (s ? 0)
A. 
B. 
C. 
D. 
Answer: A
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Find the area of the specified region.Inside one leaf of the four-leaved rose r = 3 sin 2?
A. 
- 
B. 
C. 
D. 
Divide. Use bar notation to write repeating decimals. 25.9/4
A. 6.475 B. 0.6475 C. 64.75 D. 0.06475
Solve the problem. Assume that simple interest is being calculated in each case. Round your answer to the nearest cent.Robert Hall opened a maid service company. To pay for startup costs, Robert Hall borrowed $87,000 from a bank at 6% for 1 year. Find the interest.
A. $522.00 B. $6090.00 C. $92,220.00 D. $5220.00
Answer the question(s) based on the following situation: A dishonest coin (landing heads 
of the time) is tossed 1350 times. The random variable X denotes the total number of heads that come up in the 1350 tosses.The mean ? of this approximately normal distribution X is approximately
A. 540. B. 23.2. C. 675. D. 810. E. none of these