PSAT Math Multiple-Choice Practice Question 421

Question: 421

A biologist studying the birth rate of a certain fish uses the function b(n) to analyze the fish's effect on other parts of the ecosystem, where n is the number of eggs laid by the fish over a given period of time. Which of the following lists could represent the domain for the biologist's function?

Correct Answer: D

Explanation:

D

Difficulty: Easy

Getting to the Answer: The domain of a function represents the possible input values. In this function, the input values are represented by n, which is the number of eggs laid by the fish over a given period of time. Because there cannot be a negative number of eggs laid or a fraction of an egg laid, the list in (D) is the only one that could represent the function's domain.

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