Solve the problem.The numerator of a fraction is 6 times the denominator. If 9 is subtracted from the numerator, and added to the denominator, the resulting fraction is equal to 
. What was the original fraction (not written in lowest terms)?.
A. 
B. 
C. 
D. 
Answer: C
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Subtract. Combine like terms, and write the answer in descending order.(-9b2 + 1) - (-b3 - 7b2 + 3)
A. b3 - 2b2 - 2 B. b3 - 16b2 + 4 C. -8b3 - 6b2 - 3 D. -8b3 - 7b2 - 2
The oxygen consumption (in milliliter/pound/minute) for a person walking at x mph is approximated by the function
?
?
where the oxygen consumption for a runner at x mph is approximated by the function
?
?
At what speed is the oxygen consumption the same for a walker as it is for a runner? What is the level of oxygen consumption at that speed?
?
A. 3.1 mph, 100.6 mL/lb/min
B. 7.6 mph, 95.6 mL/lb/min
C. 4.6 mph, 65.6 mL/lb/min
D. 5.6 mph, 75.6 mL/lb/min
E. 7.1 mph, 90.6 mL/lb/min
Solve the equation.
A. 
, 
B. 
, 
C. 
, 
D. 
, 
E. 
Multiply.
A. 242,090 B. 242,200 C. 242,100 D. 242,110