The population of snow leopards in a certain area can be modeled by the function P defined above, where is the population t years after 1990. Of the following, which is the best interpretation of the equation ?
A
The snow leopard population in this area is predicted to be 30 in the year 2020.
B
The snow leopard population in this area is predicted to be 30 in the year 2030.
C
The snow leopard population in this area is predicted to be 550 in the year 2020.
D
The snow leopard population in this area is predicted to be 550 in the year 2030.
Correct answer: C
Explanation
Choice C is correct. It’s given that represents the population of snow leopards t years after 1990. corresponds to and . It follows that corresponds to 30 years after 1990, or 2020. Thus, the best interpretation of is that the snow leopard population in this area is predicted to be 550 in the year 2020.
Choices A and B are incorrect and may result from reversing the interpretations of t and . Choice D is incorrect and may result from determining that 30 years after 1990 is 2030, not 2020.
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id cb_question_bank:eeb39257-62a0-42a8-a97a-38020112027d · question 8643d906 · IBN 020395-DC
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