What is the domain of the following relation: Is this relation a function? Why or why not?
R: {(1, 2), (-3,5), (1, -2), (2, -3)}?

At the beginning of the day, stock xyz opened at $6.12. at the end of the day, it closed at $6.88. what is the rate of change of stock xyz? a. 1.17% b. 11.0% c. 12.4% d. 81.5%

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?

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?