Which expression is equivalent 121x^2-64y^2 ?

How do the graphs of y = 1/x and y=5/x+6 compare?

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?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.