ExplanationQuestion 9. In 2003, only dogs and goldfish each accounted for more than 20% of the store’s total sales.

Hence 2 is the answer.Question 10. The number of goldfish sold in 2002 was 35% of 9,000, or 3,150 goldfish. The number of goldfish in 2003 was 40% of 10,000, or 4,000. To find the difference, simply subtract: 4,000 - 3,150 = 850.

Hence option D is correct.Question 11. Total cat sales in 2002 can be calculated as 10% of 9,000, or 900 total cats. In 2003, the figure is 9% of 10,000, or 900 total cats. Therefore, the same number of cats was sold in both years. The answer is choice (A).

Hence option A is correct.Question 12. Store A and Store B both sold an equal number of pets in 2002, meaning both sold 4,500 animals. If the total number of pets sold by Store A then increases by 34%, Store A sold 6,030 animals in 2003. The total number of animals sold in 2003 was 10,000, meaning store B sold only 3,970 pets. Use the percent change formula:

\frac{(4500 - 3970)}{4500}*100 to get choice (A).

Hence option A is correct.
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Sandy

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