Solve the problem.A company is planning to manufacture a new blender. After conducting extensive market surveys, the research department estimates a weekly demand of 600 blenders at a price of $50 per blender and a weekly demand of 800 blenders at a price of $40 per blender. Assuming the demand equation is linear, use the research department's estimates to find the revenue equation in terms of the demand x.
A. R(x) = 20x + 
B. R(x) = 80x - 20
C. R(x) = 80x - 20x2
D. R(x) = 80x - 
Answer: D
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