Factor the trinomial completely.a2 - 2ab - 80b2
A. (a - 8b)(a + 10b)
B. (a + 8b)(a - 10b)
C. (a - 8b)(a + b)
D. Prime
Answer: B
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The mode for this set of numbers: 1.5cc, 4.0cc, 6.5cc, 8.0cc, 8.0cc, 8.0cc, 10.5cc, 12.0cc, 12.0cc; is
A. 12.0cc B. 8.0cc and 12.0cc C. 8.0cc D. none
Solve.On July 1st, Jamie's checking account had a balance of $1250. Throughout the month he made the following transactions: Withdrew $550, deposited $80, withdrew $120, withdrew $385, and deposited $425. What was his balance at the end of the month?
Fill in the blank(s) with the appropriate word(s).
Graph the solution set of the system of inequalities or indicate that the system has no solution.x2 + y2 ? 813x + 4y ? 12
A. 
B. 
C. 
D. 
Use the fundamental identities to simplify the expression.cos (-x) cos x - sin (-x) sin x
A. 2 B. 1 C. 0 D. cos2x sin2x