Danny DeVito added 3 1/4 cups of lettuce to a salad. Then he decided he actually wanted Spinach. How much lettuce will he need to remove so the bowl is completely empty of lettuce? Express your answer as a decimal.

Solve the system of equations. y= 2x y= x^2 - 15

Enter the missing numbers in the boxes to complete the table of equivalent ratios of lengths to widths. ? 18 8 ? 10 30 12 ?

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