(in grams). Suppose The brain mass at a fetus can be estimated using the total mass of the fetus by the function b = 0.22m0 87,where m is the mass of the fetus (in grams) and b is the brain mass dm the brain mass of a 20-9 ietus is changing at a rate of 0.25 g per day. Use this to estimate the rate 0! change of th total mass of the fetus, _dt dm ET =D 9 per day (Round to ve decimal places as needed.)