How would you convert 18 months to years?

3x = 729 solve for x plz . it's urgent. will mark

Acarton of juice contains 64 ounces miss wilson bought six cartons of juice how many ounces of juice did she buy

Parabolas y=−2x^2 and y=2x^2+k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.