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Brent was looking at his cell phone bill and saw that the total number of texts he has sent is tracked.



Month Texts

1 120

2 237

3 354

4 471



The function representing Brent's texting per month is f(m) = 117m + 3. What does the 117 represent?



AThe number of texts at the start

BThe number of the month when Brent was texting

CThe number of texts Brent had in total

DThe number of the additional texts per month