Solve the problem.The price p (in dollars) and the quantity x sold of a certain product obey the demand equation x = -10p + 280, 0 ? p ? 28.What quantity x maximizes revenue? What is the maximum revenue?

A. 280; $1960
B. 70; $1470
C. 140; $1960
D. 210; $1470


Answer: C

Mathematics

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Solve the problem.One conveyor belt can move 1000 boxes in 6 minutes. Another can move 1000 boxes in 8 minutes. If another conveyor belt is added and all three are used, the boxes are moved in 3 minutes. How long would it take the third conveyor belt alone to do the same job?

A. 1 min
B. 24 min
C.  min
D.  min

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Determine how many of the first 5 statements in the sequence obtainable from the given statement are true.2n < n2

A. 5 B. 3 C. 2 D. 4

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Transform the polar equation to an equation in rectangular coordinates. Then identify and graph the equation.r sin ? = 4 

A.

y = -4; horizontal line 4 units
below the pole
B.

y = 4; horizontal line 4 units 
above the pole
C.

x = -4; vertical line 4 units
to the left of the pole
D.

x = 4; vertical line 4 units
to the right of the pole

Mathematics