For the cost function C(x), find the marginal cost at the given production level x. Round your answer to two decimal places.
?
?
A. $19.62 per item
B. $21.28 per item
C. $9.61 per item
D. $19.60 per item
E. $15.00 per item
Answer: D
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Solve the quadratic equation.10x2 = 80x
A. 0, 8 B. 10, 8 C. 8 D. No real solutions
Solve the problem.In one city, the local cable TV company charges $2.42 for each pay-per-view movie watched. In addition, each monthly bill contains a basic customer charge of $18.50. If last month's bills ranged from a low of $33.02 to a high of $59.64, over what range did customers watch 
movies?
A. movies watched varied from 6 to 17 inclusive B. movies watched varied from 5 to 16 inclusive C. movies watched varied from 5 to 18 inclusive D. movies watched varied from 7 to 18 inclusive
The pendulum on a grandfather clock swings from side to side once every second. If the length of the pendulum is 5 feet and the angle through which it swings is 22°, how far does the tip of the pendulum travel in 1 second? ?
A. 1.92 feet B. 1.52 feet C. 1.62 feet D. 2.12 feet E. 1.82 feet
Graph the inequality.x2 + y2 ? 16
A. 
B. 
C. 
D. 