Mr. jenkins won 500$ in a raffle. he split some of the money among his 3 kids and had 20$ left. write the equation for this

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

Which graph represents the equation y =4x

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