Prove that a set fcr is closed if and only if the following property holds if (en) is a cauchy sequence with n e f for all n e n then lim zn e f

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

5x−4≥12 or 12x+5≤−4 can you with this problem

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b?