How do you work out 85.68/21?

Maria solved an equation as shown below. what is the solution to maria’s equation?

Candice uses the function f(t)=t+100−−−−−−√ to model the number of students in her after-school program. the variable t represents days and f(t) represents the number of students. how many days does it take for there to be 15 students in her program? a. 225 days b. 125 days c. 325 days d. 115 days

Have yall ever just farted and was like, i farted.