Factor completely. If the polynomial is prime, so state.3x3 + 17x2 + 20x
A. x(3x + 4)(x + 5)
B. x(x + 4)(3x + 5)
C. 3x(x + 4)(x + 5)
D. prime
Answer: B
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Solve the problem.Rachel's bus leaves at 7:25 PM and accelerates at the rate of 3 meters per second per second. Rachel, who can run 8 meters per second, arrives at the bus station 3 seconds after the bus has left. Find parametric equations that describe the motions of the bus and Rachel as a function of time. Determine algebraically whether Rachel will catch the bus. If so, when?
A. Bus: x1 = 
t2, y1 = 2; Rachel: x2 = 8(t - 3), y2 = 4
Rachel will catch the bus at 7:30 PM
B. Bus: x1 = 
t2, y1 = 2; Rachel: x2 = 8(t - 3), y2 = 4
Rachel won't catch the bus.
C. Bus: x1 = 3t2, y1 = 2; Rachel: x2 = 4(t - 3), y2 = 4
Rachel will catch the bus at 7:29 PM
D. Bus: x1 = 
t2, y1 = 2; Rachel: x2 = 8(t + 3), y2 = 4
Rachel won't catch the bus.
Solve the equation. First simplify the expression by combining like terms.-4(-8x - 8) + 7(7 - 2x) = (16 + 19x)
A. {97} B. {-33} C. {81} D. {65}
Graph the linear inequality.y < -5x + 1
A. 
B. 
C. 
D. 
Solve the problem.The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by 
where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find the hydrogen ion concentration if the 
A. 3.98 x 10-9 B. 2.51 x 10-9 C. 2.51 x 10-8 D. 3.98 x 10-8