Method 1 of predicting a child's height average of parents heights in inches and then add 205 for a boy or subtract 2.5 for a girl. Method 2 add parents' heights in inches then add 5 additional inches if the boy and subtract 5 inches if girl then divides the total by 2. Are both formulas equvilent to the formulas of the first one?

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A: Please refer to the image below

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