Simplify by using the distributive law and combining like terms.6x - 2(-6x - 4)
A. 12x + 8
B. 18x + 8
C. -12x - 8
D. 18x - 4
Answer: B
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Solve.A ball is thrown downward with an initial velocity of 28 meters per second from a cliff that is 
high. The height of the ball is given by the quadratic equation 
where h is in meters and t is the time in seconds since the ball was thrown. Find the time that the ball will be 
from the ground. Round your answer to the nearest tenth of a second.
A. 3.9 sec B. 2.8 sec C. 3.0 sec D. 2.9 sec
Divide.
÷ 3
A. 6
B. 3
C. 
D. 
Solve the problem.Suppose that the function y = f(x) is increasing on the interval (2, 8). Over what interval is the graph of 
increasing?
A. (2, 8) B. (-3, 3) C. (7, 13) D. (10, 40)
Solve the problem.A population of crabs that eats algae lives in a bay. In the bay there are five kinds of algae. A biologist wants to find out which types of algae are eaten by the crabs. If the biologist examines the stomach contents of the crabs, how many possibilities are there for the kinds of algae he will find?
What will be an ideal response?