The post office recorded the weights of packages sent on a particular day and used the results to construct a histogram. Use the histogram to solve the problem. 
0-910-1920-2930-39Weight of Package (pounds)Find the number of packages 10 pounds and over.
A. 11 packages
B. 6 packages
C. 5 packages
D. 7 packages
Answer: A
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Solve the problem.A textile company has specific dyeing and drying times for its different cloths. A roll of Cloth A requires 50 minutes of dyeing time and 45 minutes of drying time. A roll of Cloth B requires 60 minutes of dyeing time and 25 minutes of drying time. The production division allocates 2360 minutes of dyeing time and 1660 minutes of drying time for the week. How many rolls of each cloth can be dyed and dried?
A. 11 rolls of Cloth A, 40 rolls of Cloth B B. 18 rolls of Cloth A, 28 rolls of Cloth B C. 28 rolls of Cloth A, 16 rolls of Cloth B D. 21 rolls of Cloth A, 31 rolls of Cloth B
Express the given trigonometric function in terms of the indicated function.sin ? in terms of cos ?
A. 
B. ±
C. 1 - cos ?
D. ±
Find the area if the distance between two adjacent dots in a row or column is one unit.What is the ratio of the area of B to the area of A.
A. 
B. 
C. 
D. 
Place the correct symbol, < or >, in the blank between the whole numbers.522 
507
A. > B. <