A newborn infant usually triples its birth weight by age one year. Baby carter weighed 28 pounds on his first birthday. If this
were triple his birth weight (b), which equation below could be used to determine his birth weight? (1) b/3=28. (2) b-3=28. (3) 2b=28. (4) b+3=28. (5) 3(b+3)=28
