Solve the problem.For a charter flight, an airline charges a fare of $200 per person plus $4 per person for each unsold seat on the plane. If the plane holds 100 passengers and if x represents the number of unsold seats, find an expression for the total revenue received for the flight and find the maximum revenue.[Hint: To find an expression for the total revenue, multiply the number of people flying, 
by the price per ticket.]
A. R(x) = (100 - x)(200 + x)
maximum revenue: $22,500
B. R(x) = (100 - x)(200 + 4x)
maximum revenue: $22,500
C. R(x) = 204(100 - x)
maximum revenue: $20,400
D. R(x) = (100 - x)(200 + 4x)
maximum revenue: $18,000
Answer: B
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Provide an appropriate response.Simplify: 
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B. 
C. 
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Find the domain and the range of the functions or relations from the graph.
A. domain: [0, ?); range: [0, ?) B. domain: [0, ?); range: (-?, ?) C. domain: (-?, ?); range: [-2, ?) D. domain: [0, ?); range: [-2, ?)
Use the order of operations to simplify the expression.
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A. 
B. 
C. 
D. 
The sequence is defined recursively. Write the first four terms.a1 = x; an = an-1 + T
A. a1 = x, a2 = T, a3 = 2T, a4 = 3T B. a1 = x, a2 = x + T, a3 = x + 2T, a4 = x + 3T C. a1 = T, a2 = T + x, a3 = T + 2x, a4 = T + 3x D. a1 = x, a2 = x - T, a3 = x - 2T, a4 = x - 3T