Use the graph to estimate any solutions of the system.3x - 4y = 104x + y = 7
[-5, 5] by [-5, 5]
A. (2, 1)
B. (2.5, -1)
C. (2, -1)
D. (2.5, -0.5)
Answer: C
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Simplify the polynomial by adding or subtracting, as indicated. Express your answer as a single polynomial in standard form.Find the sum of (8x6 - 6x4) and (4x6 + 9x4 + 3).
A. 12x11 B. 3x + 3x6 - 3x4 C. 12x6 + 3x4 + 3 D. -2x6 + 17x4 + 3x
Work. In physics, the work W done by a constant force on a point that moves in a straight line varies directly as the point displacement s. If the work becomes 242 J for a displacement of 11 meters, what is the work for a displacement of 20 meters?
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Solve the problem.BJ can overhaul a boat's diesel inboard engine in 15 hours. His apprentice takes 30 hours to do the same job. How long would it take them working together assuming no gain or loss in efficiency?
A. 45 hr B. 10 hr C. 4 hr D. 6 hr
List the critical values of the related function. Then solve the inequality.
? 
A. 8; [8, ?) B. No critical values; ? C. 4; (-?, 4] D. No critical values; (-?, ?)