Factor by grouping.12(a + 6)2 + 10(a + 6) + 2
A. (4a + 26)(3a + 19)
B. (4a + 25)(3a + 20)
C. (4a + 2)(3a + 1)
D. (4a + 8)(3a + 7)
Answer: A
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Perform the indicated operation
Fill in the digits for the given place values in the following whole number.8,483,187,818billions 
millions 
A. billions: 3, millions: 8 B. billions: 4, millions: 3 C. billions: 3, millions: 1 D. billions: 8, millions: 3
Find all values of the variable for which the rational expression is undefined. State "no values" if none exist.
A. 6, -6 B. 0 C. -7, -3 D. 7, -3
Solve the problem.The average daily temperature T of a city in the United States is approximated by T = 55 - 23 cos 
(t -30)where t is in days, 1 ? t ? 365, and t = 1 corresponds to January 1. Find the period of T.
Fill in the blank(s) with the appropriate word(s).