Naomi and her children went into a bakery where they sell donuts for $1.25 each and cookies for $0.75 each. Naomi has $15 to spend and must buy at least 14 donuts and cookies altogether. Also, she must buy a minimum of 2 donuts. If x represents the number of donuts purchased and y represents the number of cookies purchased, write and solve a system of inequalities graphically and determine one possible solution.