Which nets can form a cube? select 3 options

Which of the binomials below is a factor of this trinominal? x^2-13+30

Plzzz i beg u so much asaaaap ! what is the slope of this line? enter your answer in the box.

Noor brought 21 sheets of stickers. she gave 1/3 of a sheet to each of the 45 students at recess. she wants to give teachers 1 1/2 sheets each.