Solve the logarithmic equation.log 5x = log 3 + log (x + 4)
A. 6
B. -6
C. 
D. 
Answer: A
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Solve the problem.Show that a planet in a circular orbit moves with constant speed.
What will be an ideal response?
Solve the problem.If a ball is thrown upward at 64 feet per second from the top of a building that is 120 feet high, the height of the ball can be modeled by 
feet, where t is the number of seconds after the ball is thrown. After how many seconds does the ball reach its maximum height?
A. 4 sec B. 3.8 sec C. 2 sec D. 1 sec
Solve the system of equations by graphing the equations on the same set of axes.
A. (-1, -5) B. (5, 1) C. (1, 5) D. no solution
Express the graph shown using interval notation. Also express it as an inequality involving x.
A. [3, 7] 3 ? x ? 7 B. (3, 7] 3 < x ? 7 C. [3, 7) 3 ? x < 7 D. (3, 7) 3 < x < 7