Solve the problem.Satterfield Pavement's marginal cost, in dollars, of paving a road with asphalt is given by C'(x) = x2 - 25x + 2200, for x ? 20,where x is measured in hundreds of feet. Use 4 subintervals over  and the left endpoint of each subinterval to approximate the total cost of paving 1000 feet of road.

A. $23,019.53
B. $21,144.53
C. $8457.81
D. $21,076.56


Answer: B

Mathematics

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Find the reciprocal of the number or algebraic fraction.

A. 5
B. 0
C.
D. 1

Mathematics

Convert as indicated.6.25 pounds to ounces

A. 62.5 oz B. 625 oz C. 100 oz D. 1250 oz

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Solve the problem.An airline with two types of airplanes, P1 and P2, has contracted with a tour group to provide transportation for a minimum of 400 first class, 900 tourist class, and 1500 economy class passengers. For a certain trip, airplane P1 costs $10,000 to operate and can accommodate 20 first class, 50 tourist class, and 110 economy class passengers. Airplane P2 costs $8500 to operate and can accommodate 18 first class, 30 tourist class, and 44 economy class passengers. How many of each type of airplane should be used in order to minimize the operating cost?

A. 14 P1 planes and 7 P2 planes B. 5 P1 planes and 22 P2 planes C. 13 P1 planes and 9 P2 planes D. 9 P1 planes and 13 P2 planes

Mathematics

Solve the quadratic equation. (2x - 1)(x + 1) = 3

A.
B.
C.
D.

Mathematics