Productivity and Yield of Cultivated Crops Are Often Reduced by Insect

question 223

Multiple Choice

Productivity and yield of cultivated crops are often reduced by insect pests. The following graph shows the relationship between the yield of a certain crop, f(x) , as a function of the density of aphids x. (Aphids are small insects that suck plant juices.) Here, f(x) is measured in kilograms/ 4,000 square meters, and x is measured in hundreds of aphids/bean stem. By computing the slopes of the respective tangent lines, estimate the rate of change of the crop yield with respect to the density of aphids when that density is 200 aphids/bean stem and when it is 800 aphids/bean stem. ​ ​

• A) - 0.5 when it is 200 aphids/bean stem, - 1.333 when it is 800 aphids/bean stem
• B) 00.5 when it is 200 aphids/bean stem, 01.333 when it is 800 aphids/bean stem
• C) 02 when it is 200 aphids/bean stem, 00.75 when it is 800 aphids/bean stem
• D) - 2 when it is 200 aphids/bean stem, - 0.75 when it is 800 aphids/bean stem

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The motivation behind certain abusive behaviors, where the abuser seeks to dominate and restrict the freedom of their victim.

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The process by which individuals develop attitudes and behaviors toward other people in society, based on social and cultural norms, laws, and personal beliefs.

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