Please help me I have no clue what the answer is

What is the prime factorization of 230

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

Solve the system of equations. 2x-2y=-4 and x+y=8. show work