Explanation14. Since the problem asks for the approximate value of Region Z’s honey production in 1985, you’ll need to use the first and third graphs. The first graph tells you that there were about 15,000 pounds of honey produced that year, and the third graph tells you that each pound was worth just less than 125 cents, so try 120 cents—or, since the answer needs to be in dollars, $1.20: 15,000 pounds × $1.20 per pound = $18,000.
The closest answer is choice (A).
15. Use the graph to estimate your starting values and then use the percent change formula, which is \(\frac{difference}{original}*100\). The largest number of colonies—about 12,000—was in 1981, while 1984 and 1986 appear to be tied for lowest at about 5,000 colonies. Since all values are in the thousands, simplify by calling your values 12 and 5: \(\frac{12-5}{12}*100=\frac{7}{12}*100\), which is approximately 60%. As always, watch out for trap answers: If you selected choice (A), you may have set the original value to 5 instead of 12.
Hence option B is correct.
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