Solve.Suppose that a polynomial function is used to model the data shown in the graph below.
For what intervals is the function decreasing?
A. 0 through 10 and 30 through 50
B. 10 through 20 and 30 through 50
C. 10 through 30
D. 0 through 30
Answer: C
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Provide an appropriate response.If a = 4.23, b = 10.07, and c = 10.92, express sin A as a decimal to the nearest ten-thousandth. 
A. 0.3874 B. 2.3806 C. 0.4201 D. 2.5816
Solve the problem.For a certain computer desk, the manufacturing cost C per desk (in dollars) is C = 
where x is the number of desks manufactured.a. Find the average cost per desk when manufacturing 200 desks.b. Find the average cost per desk when manufacturing 1000 desks.
A. a. $65 b. $45 B. a. $425 b. $405 C. a. $375 b. $395 D. a. $450 b. $425
Evaluate the expression.
A. - 8
B. - 
C. 
D. 
Solve the problem. Round to the nearest tenth, if necessary.A long-distance runner runs 3 miles directly south and then faces due east and runs another 6 miles. How far is the runner, in a straight line, from his starting point? 
A. 4.5 mi B. 3.35 mi C. 6.7 mi D. 22.5 mi