The ratio 2 to 5 is closest to the ratio of the total number of insects in all three colonies in week 8 to the total number of insects at the time of initial treatment.
According to the bar graph,
The total number of insects in all three colonies in week 8 was ≈ 20 + 10 + 50 = 80
The total number of insects at the time of initial treatment (week 0) was ≈80 + 65 + 55 = 200.
The ratio of these approximations is 80 to 200, which is equivalent to 2 to 5.
Therefore, the ratio 2 to 5 is closest to the ratio of the total number of insects in all three colonies in week 8 to the total number of insects at the time of initial treatment.
Choices B, C, and D are incorrect and may result from setting up ratios using weeks other than week 8 and week 0 or from calculation errors.
The question is incomplete. Completed question is given below the answer and bar graph is attached.
Complete question:
Three colonies of insects were each treated with a different pesticide over an 8-week period to test the effectiveness of the three pesticides. Colonies A, B, and C were treated with Pesticides A, B, and C, respectively. Each pesticide was applied every 2 weeks to one of the three colonies over the 8-week period. The bar graph above shows the insect counts for each of the three colonies 0, 2, 4, 6, and 8 weeks after the initial treatment.
Of the following, which is closest to the ratio of the total number of insects in all three colonies in week 8 to the total number of insects at the time of initial treatment?
Therefore,
The ratio 2 to 5 is closest to the ratio of the total number of insects in all three colonies in week 8 to the total number of insects at the time of initial treatment.
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https://brainly.com/question/8644324
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