can anyone sub to my youttube channel pls, its called Yakobu, and Im trying to reach 100 subs by the end of the month :)

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Which graph has a rate of change of zero

Atest consists of 10 multiple choice questions, each with 5 possible answers, one of which is correct. to pass the test a student must get 60% or better on the test. if a student randomly guesses, what is the probability that the student will pass the test?