Assign two variables for each problem, and write the equations. do not solve.
a pair of boots and a pair of tennis shoes cost $196.12. the difference in their cost is $44.38. determine the cost of each type of footwear.

2(n-1)+4n=2(3n-1)n=0no solutioninfinitely many solutions n= - 4 !

Fredrick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin

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.)