Surface area of a sphere

Answer this question! 30 points and brainliest! only if you know the answer.

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

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