Solve the problem.One pump can drain a pool in 6 minutes. When a second pump is also used, the pool only takes 4 minutes to drain. How long would it take the second pump to drain the pool if it were the only pump in use?
A. 22 min
B. 12 min
C. 
min
D. 2
min
Answer: B
Mathematics
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Express the number in decimal notation.8.1 × 105
A. 81,000 B. 8,100,000 C. 405 D. 810,000
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Graph the function.y = 
sin 
x
A. 
B. 
C. 
D. 
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Decide whether the pair of lines is parallel, perpendicular, or neither.y + 1 = -4x and 4y = 24x - 14
A. Parallel B. Perpendicular C. Neither
Mathematics
Find the perimeter. Use 3.14 for ? when needed.
A. 90 cm B. 50 cm C. 410 cm D. 70 cm
Mathematics