Time crucial! i will give if you answer correctly !

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

If the tip varies directly with the number of guest which equation represents between the tip,t, and the number of guest,g?

If a suspect is in possession of 20 grams of cocaine how many ounces does he possess what will the charge be