Solve the inequality, and graph the solution set.x2 + 2x ? 3
A. [-1, 3]
B. (-?, -1] ? [3, ?)
C. (-1, 3)
D. [-3, 1]
Answer: D
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Find the exact value of the indicated trigonometric function of ?.tan ? = 
, 180°< ? < 270°Find cos ?.
A. 
B. - 
C. -8
D. 
Solve the problem.The population size of a culture of bacteria triples every day such that its size is modeled by the sequence 
where n is the number of the day just beginning. Find the size of the culture at the beginning of the third day and the size of the culture originally.
A. 720 bacteria; 26
bacteria originally
B. 2160 bacteria; 240 bacteria originally
C. 2160 bacteria; 80 bacteria originally
D. 720 bacteria; 80 bacteria originally
Use the coordinates of the indicated points to find the slope of the line.
A. - 
B. 3
C. 
D. -3
Determine the greatest common factor for the pair of numbers.140, 210
A. 10 B. 20 C. 140 D. 70