Solve the problem.The function f, given in the diagram below, computes the average cost of an item during year x. Evaluate 
A. 510
B. 490
C. 570
D. 420
Answer: B
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Provide an appropriate response.True or False: 6 is a rational number.
Fill in the blank(s) with the appropriate word(s).
Graph the system of inequalities.y < x + 13x + 5y > -5
A. 
B. 
C. 
D. 
Solve the problem.Ron finds 8 books at a bookstore that he would like to buy, but he can afford only 5 of them. In how many ways can he make his selection? How many ways can he make his selection if he decides that one of the books is a must?
A. 3360; 420 B. 6720; 840 C. 336; 210 D. 56; 35
Solve the problem.An audio speaker that weighs 50 pounds hangs from the ceiling of a restaurant from two cables as shown in the figure. To two decimal places, what is the tension in the two cables? 
A. Tension in right cable: 35.90 lb; tension in left cable: 14.10 lb B. Tension in right cable: 14.10 lb; tension in left cable: 41.59 lb C. Tension in right cable: 41.59 lb; tension in left cable: 35.90 lb D. Tension in right cable: 35.90 lb; tension in left cable: 41.59 lb