Mike sold half of his comic books and then bought 9 more. he now has 14. how many did he begin with?

What point is the projection of q on a) r b) s c) t

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?

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