Hel pleas The half-life of Palladium is 4 days. How much of a 500g sample would remain after 22 days?

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers