What is the equation of a circle with center (5,12) solution point (5,-1)

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

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

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