Solve. Then graph the solution.x2 - 6x - 7 ? 0
A. (-?, -1]
B. [7, ?)
C. (-?, -1] ? [7, ?)
D. [-1, 7]
Answer: D
Mathematics
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Add.-3.7 + (-19.2)
A. -15.5 B. -22.9 C. 15.5 D. 22.9
Mathematics
Solve the problem.For the equation y = - 
cos(2x - 2?), identify (i) the amplitude, (ii) the phase shift, and (iii) the period.
A.
(i)  | (ii)  | (iii) ? |
B.
(i)  | (ii) ? | (iii) ? |
C.
| (i) 2 | (ii) 2? | (iii) 2? |
D.
| (i) 2 | (ii) ? | (iii) ? |
Mathematics
Provide an appropriate response.For 6, x, 12 to be an arithmetic sequence, x must be:
A. 9 B. 3 C. 8 D. 10
Mathematics
Solve the problem.The logistic growth model 
represents the population of a species introduced into a new territory after t years. When will the population be 80?
A. 10.74 yr B. 0.1 yr C. 3.48 yr D. 14.12 yr
Mathematics