Answer:
Step-by-step explanation:
C and D
since the line is going up from points A to D it cannot be a negative number.
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B
7 less than 3 times a number (X) is (3x-7), and then the sum of these two numbers means we have (3x-7)+X, and then we know this equals 109, leaving us with:
(3x-7)+x = 109