Which of the following are required to find destiny using the destiny formula

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

Two numbers have a sum of -19. one number is x. what expression represents the other number?

Solve 2x − 1 = 11 for x using the change of base formula log base b of y equals log y over log b.