Find an equation for the graph.
A. y = -4 cos 
B. y = -4 sin (2x)
C. y = -4 sin 
D. y = -4 cos (2x)
Answer: C
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Use values from the compound interest table to find the compound amount. Round to the nearest cent.
$7,670 at 8% compounded semiannually for 12 years
A. $19,314.36 B. $15,033.20 C. $12,279.92 D. $19,660.51
Solve the problem.Two trains leave a train station at the same time. One travels east at 12 miles per hour. The other train travels west at 7 miles per hour. In how many hours will the two trains be 114 miles apart?
A. 12 hr B. 3 hr C. 6.5 hr D. 6 hr
Simplify the expression using order of operations.-4 + [5 ? 3 + (-4)]2 ÷ 11
A. 7
B. 15
C. 
D. - 
Solve the system of linear equations by the method of elimination. Use the graph to check your solution.
?
?
??
A. ?(1, -1)?
B. ?(0, 1)?
?
C. ?(-1, 1)?
?
D. ?(1, 1)?
?
E. ?(-1, -1)?
?