I really need help with this I don’t want to fail

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

The number of 8th graders who responded to a poll of 6th grade and 8 th graders was one fourtg of the number of 6th graders whi responded if a total of 100 students responddd to the poll how many of the students responded were 6 th graders