Malika is making lemonade to sell at a school fundraiser:

She purchased a new lemon squeezer for $9.00.

The cost of the ingredients for each serving of lemonade is $1.50.

She will be selling each serving of lemonade for $2.25.

Write an inequality that represents the minimum number of servings of lemonade, x, Malika must sell for the money from her sales to exceed the total cost of making the lemonade.