Solve.If the temperature is held constant, the pressure that a gas exerts against the walls of a container is inversely proportional to the volume of the container. A gas is inside a cylinder with a piston at one end that can vary the volume of the cylinder. When the volume of the cylinder is 
, the pressure inside is 
At what volume will the pressure inside be 40 kg/cm2?
A. 636 cm3
B. 117 cm3
C. 129 cm3
D. 578 cm3
Answer: B
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Factor completely, or state that the polynomial is prime.x3 + 2x2 + x + 2
A. (x2 + 2)(x + 1) B. (2x2 + 2)(x + 1) C. (x2 + 1)(x + 2) D. (x2 + 1)(2x + 2)
If possible, use the graph to evaluate the expression.f(-1)
A. -5 B. -4 C. -3 D. -2
Solve the problem.Two pipes can be used to fill a pool. Working together, the two pipes can fill the pool in 
The larger pipe can fill the pool in 4 hours less time than the smaller pipe can alone. Find the time to the nearest tenth of an hour it takes for the smaller pipe working alone to fill the pool.
A. 8.7 hr B. 4.7 hr C. 4.6 hr D. 8.6 hr
Use the properties of parallel lines to solve the problem.In the figure, 
. m(?ABC) = 67°. Find the measures of angles ?ABE, ?FCD, and ?BCD.
A. m(?BCD) = 67°, m(?ABE) = m(?FCD) = 23° B. m(?BCD) = m(?ABE) = 67°, m(?FCD) = 113° C. m(?BCD) = 67°, m(?ABE) = m(?FCD) = 113° D. m(?BCD) = m(?ABE) = m(?FCD) = 23°