Solve the problem.An airline charter service charges a fare per person of $350 plus $20 for each unsold seat. The airplane holds 125 passengers. Let x represent the number of unsold seats and write an expression for the total revenue R for a charter flight.
A. R(x) = x(350 + 20x) or 350x + 20x2
B. R(x) = (125 - x)(350 + 20x) or 43,750 + 2,500x - 20x2
C. R(x) = 125(350 + 20x) or 43,750 + 2,500x
D. R(x) = (125 - x)(350 + 20x) or 43,750 + 2,150x - 20x2
Answer: D
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