1 = PRT is the simple interest formula. P = principal, R = interest rate and T = time in years. What is the principal if $6.60 interest has been earned after 1.5 years at an interest rate of 2%?
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Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

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.)

What is negative 3/9 times negative 2/8 ?