If you own a store and want to mark your goods so that after tax they come out to a whole number, what should you price a $12 item for if the sales tax is 7%? In other
words, if you want the price to be $12 after tax, what should you price the item before
tax?

Se tiene en una caja de canicas 10, 4 blancas y 6 negras ¿cual es la probabilidad que en 2 extracciones con reemplazo sean blancas? ¿cual es la probalidad que en 2 extracciones sin reemplazo sean negras?

What is the sum of the first 8 terms of the geometric series

Dana wants to identify the favorite professional baseball team of people in her community. she stands outside a local sporting goods store and asks every other person who enters, "what is your favorite professional baseball team? " will the results of her survey be valid? explain.