A person is 89-93 pounds depending on the day, 13 years old, and 5 foot tall. Is this an appropriate weight?​

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?

Math each whole number with a rational, exponential expression

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).