Solve the problem.Two pipes together can fill a large tank in 10 hr. One of the pipes, used alone, takes 15 hr longer than the other to fill the tank. How long would each pipe take to fill the tank alone?
A. 25 hr; 40 hr
B. 15 hr; 30 hr
C. 12.5 hr; 27.5 hr
D. 10 hr; 25 hr
Answer: B
Mathematics
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x + 3
A. 
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C. 
D. 
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Solve the problem.On a map of the Thunderbird Country Club golf course, 1.5 inches equals 30 yards. How long is the 15th hole if the map shows 12.5 inches? (Round approximations to the nearest yard.)
A. 250 yd B. 3.6 yd C. 375 yd D. 562.5 yd
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Find the function value.Find f(-9) when f(x) = |x|- 6.
A. -15 B. -3 C. 15 D. 3
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Find the domain of the composite function f ? g.f(x) = 
; g(x) = 
A. {x 
B. {x 
C. {x 
D. {x 
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