PLEASE HELP ME CAN YOU ANSWER WITH AN EXPLANATION AS WELL

Dr. Doofenschmirtz has built a rocket. He launches the rocket straight up into the atmosphere. If the rocket moves from O m/s to 40 m/s in 2 sec, what is the rocket's acceleration? ​

Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?

Adoctor administers a drug to a 38-kg patient, using a dosage formula of 50 mg/kg/day. assume that the drug is available in a 100 mg per 5 ml suspension or in 500 mg tablets. a. how many tablets should a 38-kg patient take every four hours? b. the suspension with a drop factor of 10 ggt/ml delivers the drug intravenously to the patient over a twelve-hour period. what flow rate should be used in units of ggt/hr? a. the patient should take nothing pills every four hours. (type an integer or decimal rounded to the nearest hundredth as needed.)

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b