in many cases, a baby’s weight at birth is equal to one half his or her weight at age one.Explain how to estimate the weight of a baby at birth if this baby weights 18 pounds at age one.
The weight at birth is half the weight at age 1, so if the baby weighs 18 lb at age 1, it weighs half of that, or 9 lb, at birth. Divide the weight at age 1 by 2 to find the weight at birth.
If x is the weight at birth and y is the weight at age one, then this could be represented by the following equation: y = 2x If y = 18, we can solve this one-step equation: 18 = 2x By dividing each side of the equation by 2. 9 = x The baby was 9 pounds at birth. Hope this helps!
