Identify the vertex of the parabola.P(x) = 7x2 - 112x + 449

A. (1, 0)
B. (8, 1)
C. (1, 8)
D. (8, 0)

Answer: B

Mathematics

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Decide if the function is linear.y =  + 3

A. No B. Yes

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Solve the problem.The water in a tank weighs 199.88 lb. One cubic foot of water weighs 62.5 lb. How many cubic feet of water are in the tank?

A. 0.31269 ft3 B. 3.19808 ft3 C. 262.38 ft3 D. 12,492.500 ft3

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Determine the real solutions to the system of nonlinear equations.x2 + y2 = 85x2 - y2 = -77

A. (2, 9), (-2, 9), (2, -9), (-2, -9) B. (2, 9), (9, 2), (-2, -9), (-9, -2) C. (-2, -9), (-9, -2) D. (2, -9), (2, 9)

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Solve and graph. Write the solution set in set-builder and interval notation.0.6x + 12 + x > 2x + 7 - 0.5x

A. {xx < 5}; (-?, 5)

B. {xx ? 5}; [5, ?)

C. {xx > -50}; (-50, ?)

D. {xx < -50}; (-?, -50)

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Mathematics