Find the product and write the answer in simplest form. Assume variables represent nonnegative values.
? 
A. x7z7
B. x6z6
C. x7z6
D. x6z6
Answer: B
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Solve, rewrite in interval notation, and graph.-4 < 6x + 8 and 8x - 5 < 11
A. [-2, 2]
B. (-2, 2]
C. [-2, 2)
D. (-2, 2)
Solve the problem.Let 
represent the number of students present in a large class, where x represents the number of hours of study required weekly. What is the rate of change of the number of students in the class with respect to the number of hours of study?
A. 16 B. -169 C. 169 D. -16
The sequence is defined recursively. Write the first four terms.a1 = 2; an = 4an-1 + 5
A. a1 = 2, a2 = 3, a3 = 7, a4 = 23 B. a1 = 2, a2 = 13, a3 = 57, a4 = 233 C. a1 = 2, a2 = 8, a3 = 32, a4 = 128 D. a1 = 2, a2 = 13, a3 = 37, a4 = 133
Identify all values for which the expression is undefined.
A. None
B. - 
C. 
D. 7