49.564 expanded form using fraction or decimal

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. after tax the total is 45.99. what percentage of the subtotal is the total?

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2

Which choice has the correct steps in graphing the solution set to the following inequality? -45_> 20x-5y