Final answer:
To find the length of QT, sum up the lengths of QS and ST: QT = (3x + 1) + (2x - 1) = 5x. The correct answer is A) 12x + 2.
Step-by-step explanation:
To find the length of QT, we need to sum up the lengths of QS and ST. We have QS = 3x + 1 and ST = 2x - 1. Adding these two equations gives us QT = (3x + 1) + (2x - 1) = 5x.
So, the length of QT is 5x. Therefore, the correct answer is A) 12x + 2.
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