To increase an amount by 5.4%, what single multiplier would you use?

What could explain what happened when the time was equal to 120 minutes

Which of the following is the true for f(x) = 5cos

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