What is the value of x?

Tina practice piano for 15 hours last month and 45 hours this month use multiplication to write a statement comparing me i was tina practice during the two months use addition to write a statement comparing the hours tina practice during the two months

Adozen bananas weigh 3 pounds how many ounces does 1 banana weigh

Determine if the equation defines y as a function of x: 2xy = 1. yes o no