Solve.One pump can drain a pool in 10 minutes. When a second pump is also used, the pool only takes 7 minutes to drain. How long would it take the second pump to drain the pool if it were the only pump in use?
A. 67 minutes
B. 4
minutes
C. 23
minutes
D. 
minute
Answer: C
Mathematics
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+ 
A. 
B. 
C. 
D. 
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Graph.f(x) = -2x2 - 2x - 5
A. 
B. 
C. 
D. 
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Write a formula for the general term (the nth term) of the geometric sequence.-5, -10, -20, -40, -80, . . .
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