The graph below is one complete cycle of the graph of an equation containing a trigonometric function. Find an equation to match the graph. If you are using a graphing calculator, graph your equation to verify that it is correct.
?
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Answer: B
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Solve the problem.A child's playground swing (in side view) sweeps out a sector of a circle as it moves. Write an equation for the circle if the swing has a chain length of R and the rest position of the swing's seat is the origin.
A. x2 + y2 - 2Ry = 0 B. x2 + y2 - 2Ry - 2R2 = 0 C. x2 - 2Rx + y2 = 0 D. x2 + y2 + 2Ry = 0
Solve the problem.Suppose that the total annual consumption of salmon in a certain country is given by 
and that the total annual consumption of tuna in this country is given by 
, where consumption is measured in millions of pounds and x is the number of years since 2010. Find the year in which consumption of salmon reaches consumption of tuna.
A. 2028 B. 2023 C. 2025 D. 2027
Companies with high market dependence are likely to respond strongly when competitors attack their market position.
Answer the following statement true (T) or false (F)
Determine whether the pair of lines is parallel, perpendicular, or neither.
A. neither B. perpendicular C. parallel