A teacher gave her class two functions, f(x) = (x - 5] + 4 and g(x) = -x2 + 21, and asked for the solution(s) of the equation
f(x) = g(x). The answers given by four students are shown below:
Betty: only 4
Donna: only 5
Edward: 12 and 5
Gary: -3 and 4
Who found the solution correctly and why?

The circumference of a circle is 5 pi cm. what is the area of the circle?

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

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.)