Simplify the expression. Assume that all variables are non-negative. 
A. x3
B. x12
C. x-5
D. x5
Answer: D
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If 
represents the cost of purchasing b burgers, f orders of fries, and d drinks, then 
represents 10 burgers, 6 orders of fries, and 12 drinks.
Answer the following statement true (T) or false (F)
Solve the problem.Consider the rational inequality 
> 0. Without doing any work, give the solution set. (Hint: determine the sign of the numerator and denominator.)
A. (-?, ?) B. ? C. (-?, -8) D. (-9, ?)
List the elements in the sample space of the experiment.A box contains 3 blue cards numbered 1 through 3, and 4 green cards numbered 1 through 4. List the sample space of picking a blue card followed by a green card.
A. {7} B. {(1, 1), (1, 2), (1, 3), (1, 4), (2, 1), (2, 2), (2, 3), (2, 4), (3, 1), (3, 2), (3, 3), (3, 4)} C. {12} D. {(1, 1), (1, 2), (1, 3), (2, 1), (2, 2), (2, 3), (3, 1), (3, 2), (3, 3), (4, 1), (4, 2), (4, 3)}
Solve. Remember to insert units when writing your answer.A lumber yard is going to cut a board which is 54 m into 18 pieces of equal length. How long will each piece be?
A. 3 m B. 4 m C. 36 m D. 13 m