Solve the problem.Find the points where the graph of the function have horizontal tangents.f(x) = x3 - 15x

A. (-, 10), (, -10)
B. (-5, -50), (, 50)
C. (, -30)
D. (-, 30), (0,0), (, -30)


Answer: A

Mathematics

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Solve the problem.A skeet shooter starts parallel to the horizon, rotates 171° counterclockwise and fires a skeet at 5.5 mph. To the nearest tenth, what are the components of the skeet's velocity?

A. 0.9 mph, -5.4 mph B. -170.2 mph, -16.4 mph C. 170.2 mph, 16.4 mph D. -0.9 mph, 5.4 mph

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Factor out the largest possible common factor.pq(p - 5) + (p - 5)

A. pq(p - 5) B. (p - 5)(pq - 1) C. (p2q - 5pq) + (p - 5) D. (p - 5)(pq + 1)

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Solve by elimination.-6x + 6y = -112x - 12y = 2

A. No solution B. Infinite number of solutions C. (-6, 6) D. (6, -6)

Mathematics

Substitute to find the value of the expression.Mary earns three times as much per week as Maureen. If x represents the amount that Maureen earns per week, then 3x represents the amount that Mary earns per week. How much does Mary earn per week if Maureen earns $346 per week?

A. $1038 B. $115.33 C. $343 D. $349

Mathematics