If newton’s method is used with f(x) = x 2−1 and p0 = 2, how many steps are required to obtain the root with accuracy 10−8 ? (solve analytically, not experimentally.)

Ineed me i stuck and i don’t want to get it wrong

Which of the following is not a subset of {1,2,3}?

Aschool allots ? 1500 to spend on a trip to the theatre. theatre tickets have a regular cost of ? 55 each and are on offer for 1 5 off. a train ticket for the day will cost ? 12 each. if 2 teachers and the maximum number of students attend, how much money will the school have left over?