Find the opposite of the number.-5.5
A. 0
B. 5.5
C. -5.5
D. - 
Answer: B
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Rewrite the expression as the sine, cosine, or tangent of a double angle. Then find the exact value of the trigonometric expression without the use of a calculator.
A. 
B. - 
C. -
D. 
Solve the problem.An experiment in a wind tunnel generates cyclic waves. The following data is collected for 52 seconds: 
Let V represent the wind speed (velocity) in feet per second and let t represent the time in seconds. Write a sine equation that describes the wave.
A. V = 60 sin(52t - 26) + 16
B. V = 44 sin (52t - 26) + 22
C. V = 60 sin 
+ 16
D. V = 22 sin 
+ 38
Find the distance between the two given points.(4, 7) and (-7, -6)
A. 4
B. 
C. 143
D. -2
Solve the problem.It costs $300 to start up a business of selling hot dogs. Each hot dog costs 
to produce. Let y be the cost in dollars of producing x hot dogs. Write the cost equation.
A. y = 85x + 300 B. y = .85x + 300 C. y = 300x + .85 D. y = .85x - 300