Use Lagrange multipliers to find the maximum or minimum values of the function subject to the given constraint. (If an answer does not exist, enter DNE.) f(x, y) = 5xy; x − 7y = 1

Why can't my rank go i have 1723 points, but my rank is only at ambitious, which is only 250 points! like, (p. s. i know this isn't related to math, but i just don't know why it's doing this and i would really appreciate if someone could tell me whats going on with this)