Use an associative property to complete the statement. Do not simplify.(6y + 5) + (-5) =
A. 6y + (5 + (-5))
B. (6y)(5 + (-5))
C. (-5)(6y + 5)
D. (-5) + (6y + 5)
Answer: A
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Write a formula for the nth term of the arithmetic sequence. Use the formula to find the 20th term of the sequence.2, 8, 14, 20, 26, . . .
A. an = 6n - 4; a20 = 116 B. an = 6n - 2; a20 = 118 C. an = 4n - 6; a20 = 74 D. an = 4n - 2; a20 = 78
Express as a single logarithm.4loga9 + 9loga10
A. loga(36 + 90)
B. loga94 ? loga109
C. loga94109
D. loga
Decide whether the ordered pair is a solution of the given system.(-2, -10)y = x2 + 4x - 6y = 2x - 7
A. No B. Yes
Solve the problem.Approximately one-fourth of all glass bottles distributed will be recycled each year. A beverage company distributes 330,000 bottles. The number still in use after t years is given by the function N(t) = 330,000t .After how many years will 4000 bottles still be in use? Round your answer to the nearest tenth.
A. 3.2 yr B. 4.4 yr C. 6.1 yr D. 0.3 yr