In how many ways can 7 different posters be arranged in a rrow under permutation

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.)

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu