Which of the following values could represent the probabilities of complementary events  and  28% and 82%  and  10% and 80%1/7and2/72/5and3/5

Noor brought 21 sheets of stickers. she gave 1/3 of a sheet to each of the 45 students at recess. she wants to give teachers 1 1/2 sheets each.

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

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way