If c = .99, σ = 2.4, and n = 24, what is the margin of error?

What is the simplified expression for 6(2(y+x))

Which recursive formula can be used to determine the total amount of money earned in any year based on the amount earned in the previous year? f(n+1)=f(n)+5

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities