Solve the inequality.(x + 1)(x - 3) ? 0
A. (-?, -1] or [3, ?)
B. (-?, -1]
C. [-1, 3]
D. [3, ?)
Answer: C
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Solve the problem.Use the formula Passing Rating ? 85.68
+ 4.31
+ 326.42
- 419.07
, where A = number of passes attempted, C= number of passes completed, Y = total number of yards gained passing, T = number of touchdown passes, and I = number of interceptions, to approximate the passing rating for C. Felix. Round to the nearest
tenth. 
A. 83
B. 82.3
C. 83.6
D. 82
If the sequence is geometric, find the common ratio. If the sequence is not geometric, say so.1, -3, 9, -27, 81
A. -3 B. -4 C. 3 D. Not geometric
For the set, list all elements that belong to the specified set.
; Integers
A. 16, -12
B. 16
C. 16, 
D. 0, -12, 2
Use a product-to-sum identity to rewrite the expression.cos(16k) cos (4k)
A. 0.5(sin(12k) + sin(20k)) B. 0.5(cos(12k) + cos(20k)) C. 0.5(sin(12k) - sin(20k)) D. 0.5(cos(12k) - cos(20k))