College Algebra CLEP Prep Practice Exam

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What is the difference of 5x and 4x?

The correct answer is: 2x

To find the difference between two terms, we subtract one term from the other. In this case, we have 5x - 4x. This gives us x as the difference. Option A is incorrect because x is the variable, not the difference. Option B is incorrect because 10x would be the sum of 5x and 4x, not the difference. Option D is incorrect because 15x is greater than both 5x and 4x, while the difference between them should be smaller. Therefore, the only correct answer is option C, 2x.