Combine like terms.-8b + 4a - 4c - 3b + 5a
A. -11a + 9b - 4c
B. 9a - 11b - 4c
C. 9a - 11b
D. -1a - 11b - 4c
Answer: B
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Find the domain of the function.f(x) = 
A. {x|x ? 21}
B. {x|x ? 21}
C. {x|x ? 
}
D. {x|x ? 
}
Solve the problem.A ceramics workshop makes serving bowls, platters, and bread baskets to sell at its Winter Festival. A serving bowl takes 3 hours to prepare, 2 hours to paint, and 9 hours to fire. A platter takes 14 hours to prepare, 3 hours to paint, and 4 hours to fire. A bread basket takes 4 hours to prepare, 14 hours to paint, and 7 hours to fire. If the workshop has 92 hours for prep time, 70 hours for painting, and 109 hours for firing, how many of each can be made?
A. 4 serving bowls, 3 platters, 8 bread baskets B. 8 serving bowls, 4 platters, 3 bread baskets C. 9 serving bowls, 5 platters, 4 bread baskets D. 3 serving bowls, 8 platters, 4 bread baskets
Use the information given about the angle ?, to find the exact value of the indicated trigonometric function.cos ? = 
, tan ?> 0 Find sin 2?.
A. - 
B. 
C. 
D. 
Write down all the subsets of the given set.{a}
A. {a} B. ?, {a} C. {a, b} D. a