Greg is trying to solve a puzzle where he has to figure out two numbers, x and y. three less than two-third of x is greater than or equal to y. also, the sum of y and two-third of x is less than 4. which graph represents the possible solutions?

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. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax