74,271 in expanded form using exponents

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

Put the equation in slope intercept form by solving for y

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6