College Math CLEP Prep Practice Exam

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What is the result of the multiplication 5(2x - 1)

10x - 5
10x - 2
10x + 2
10x + 5

The correct answer is: 10x - 5

When solving this multiplication, we first need to follow the order of operations by multiplying the outside number, 5, with each term inside the parenthesis. This gives us 5(2x) - 5(1). Simplifying further, we get 10x - 5. The incorrect options might be a result of either incorrectly distributing the 5 or not following the order of operations. For example, choice B might have resulted from distributing the 5 to only the first term, giving us 10x - 2 instead of 10x - 5. Similarly, choices C and D might have been the result of not following the order of operations correctly, resulting in the incorrect sign for the constant term.