Which of thw following is a result of shifting circle with!!

What kind of bond pays interest which is exempt from tax?

The square root of 9x plus 7 plus the square rot of 2x equall to 7

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