Trinity is preparing to run a marathon. She has run 6 miles so far and plans to continue running 2 miles per day until race day. What equation that represents t the total amount of miles run after d days.

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38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)

Idon’t exactly understand but i think dbc=rst

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