Find and simplify the function 
at the given value 
.
?
A. -147
B. -75
C. -55
D. -111
E. -42
Answer: A
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Evaluate the expressing using a unit circle or state that the quantity is undefined. All angles are in radians.cos 
A. 
B. - 
C. - 
D. 
Solve the problem. Write your answer as a mixed number when possible.A biology experiment required pouring 
gallon of nutrient solution and 
gallon of pure water into a tank. At the end of the experiment, 
gallon of fluid had evaporated. How much fluid remained in the tank?
A. 2
gallon(s)
B. 
gallon(s)
C. 
gallon(s)
D. 13
gallons(s)
Write the sentence with the fraction as a percent. If necessary, round the percentage to the nearest tenth.
of the residents of Ashville exercise regularly.
A. 520% of the residents of Ashville exercise regularly. B. 0.52% of the residents of Ashville exercise regularly. C. 5.2% of the residents of Ashville exercise regularly. D. 52% of the residents of Ashville exercise regularly.
Solve the inequality and give the solution set.x ? 2 and x ? 4
A. {x|2 ? x ? 4} B. {x|2 < x < 4} C. {x| x ? 2} D. { }