Solve the problem.After being struck with a hammer, a gong vibrates 30 vibrations in the first second and in each second thereafter makes 
as many vibrations as in the previous second. Find how many vibrations the gong makes before it stops vibrating.
A. 40 vibrations
B. 120 vibrations
C. 35 vibrations
D. 130 vibrations
Answer: B
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Solve the problem.During a five-year period, a company doubles its profits each year. If the profits at the end of the fifth year are $176,000, then what are the profits for each of the first four years?
A. $12,000, $24,000, $48,000, $94,000 B. $11,000, $22,000, $44,000, $88,000 C. $11,000, $22,000, $44,000, $110,000 D. $11,000, $22,000, $33,000, $44,000
Find the first four terms of the indicated expansion.(x - 2)17
A. x17 + 34x16 + 544x15 - 10,880x14 + ... B. x17 - 34x16 + 544x15 + 5440x14 + ... C. x17 - 34x16 + 544x15 - 10,880x14 + ... D. x17 - 34x16 + 544x15 - 5440x14 + ...
Explain the mistake, then work the problem correctly.(2x - 2y)(2x - 2y) = 4x2 + 4y2
What will be an ideal response?
Solve the problem.Nikki is fishing from a bank 32 feet above water level. In this location, the fish tend to feed at 44 feet below the surface. How long must Nikki's fish line be to reach the fish?
A. -32 feet B. -12 feet C. 12 feet D. 76 feet