Solve the problem.Find the mass of the piece of thin metal in the shape of the surface the tetrahedron with vertices (0, 0, 0), (1, 0, 0), (0, 3, 0) and (0, 0, 2), ?(x, y, z) = 2x + 4z.
A. 12
B. 
C. 26
D. 20
Answer: B
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Simplify.
? 
A. 14
B. 
C. 
D. 
Write as a proportion.If 3 pounds of steak costs $18, then 4 pounds will cost $24.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Use a graphing utility to graph the function over the indicated interval and approximate any local maxima and local minima. Determine where the function is increasing and where it is decreasing. If necessary, round answers to two decimal places.f(x) = 0.15x4 + 0.3x3 - 0.8x2 + 5; (-4, 2)
A. local maximum at (0, 5) local minima at (-2.55, 1.17) and (1.05, 4.65) increasing on [-2.55, 0] and [1.05, 2] decreasing on [-4, -2.55] and [0, 1.05] B. local maximum at (0, 5) local minima at (-2.55, 1.17) and (1.05, 4.65) increasing on [-4, -2.55] and [0, 1.05] decreasing on [-2.55, 0] and [1.05, 2] C. local maximum at (-2.55, 1.17) and (1.05, 4.65) local minima at (0, 5) increasing on [-4, -2.55] and [0, 1.05] decreasing on [-2.55, 0] and [1.05, 2] D. local maximum at (-2.55, 1.17) and (1.05, 4.65) local minima at (0, 5) increasing on [-2.55, 0] and [1.05, 2] decreasing on [-4, -2.55] and [0, 1.05]
Find all solutions to the equation. Express the solution in degrees.sin x = - 
A. 225° + 360°n or 315° + 360°n B. 135° + 360°n or 315° + 360°n C. 240° + 360°n or 300° + 360°n D. 45° + 360°n or 315° + 360°n