A dosage requires a patient to receive 57.4 mg of medicine for every 7 kg of body weight for every 4 hours. How many grams of medication does a patient, who weights 49 kg, need in 12 hours?
round to the hundreths place

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

How do you use the elimination method for this question? explain, because i really want to understand!

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.