The weight of a baby during the first year of life is roughly approximated by a quadratic function of time. At month m, the weight, in pounds, is approximated by (a) What is the practical interpretation of the 8? w (m) = 0.042m + 1.75m + 8. (b) What is the approximate weight of a baby at 4-months old? Enter the exact answer. The approximate weight of a 4-month old baby is i pounds.