College Math CLEP Prep Practice Exam 2025 – The All-in-One Guide to Master Your Exam!

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Question: 1 / 400

What is the domain of the function f(x) = 2x + 1?

x ≥ 0

x ≤ 0

All Real Numbers

The domain of a function represents all the possible input values for the function. In this case, the function f(x) = 2x + 1 is a linear function with no restrictions or limitations on the variable x. This means that any real number can be used as an input for the function, making the answer C, "All Real Numbers," correct.

Option A, x ≥ 0, is incorrect because it would only allow non-negative numbers as inputs, while the function has no such restriction. Option B, x ≤ 0, is also incorrect because it would only allow non-positive numbers as inputs, which is not true for the function. Option D, x > 0, would only allow positive numbers as inputs, which is also not true for the function.

Therefore, option C is the only correct answer as it accurately represents the infinite range of possible inputs

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