Factor completely.w2 + 4w + 4 - z2
A. (w - 2 + z)(w + 2 - z)
B. (w - 2 + z)(w - 2 - z)
C. (-w + 4 + z)(w + 4 - z)
D. (w + 2 + z)(w + 2 - z)
Answer: D
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Answer the question.Of the 100 Senators in the U.S. Senate, 62 support a new bill on environmental protection. The opposing Senators start a filibuster. Is the bill likely to pass?
A. Yes B. No
A committee consists of six members (A, B, C, D, E, and F). A has veto power; B, C, D, and E each have one vote. F is a nonvoting member. For a motion to pass it must have the support of A plus at least two additional voting members.A weighted system that could represent this situation is
A. [6 : 3, 1, 1, 1, 1, 0]. B. [4 : 2, 1, 1, 1, 1, 0]. C. [5 : 3, 1, 1, 1, 1, 0]. D. [6 : 5, 1, 1, 1, 1, 0]. E. none of these
Perform the operation indicated. Simplify.
÷ 
A. 
B. 
C. 
D. 
Solve the problem.Joan can mow a 3-acre field in 4 hours. How long would it take her to mow a 1.5-acre field?
A. 5 hr B. 2 hr C. 4 hr D. 0.5 hr