Write 12.579 in decimal expanded form and fraction expanded form

5x + 2 = 12 solve the following equation. then place the correct number in the box provided.

If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4

Acollege student takes out a $7500 loan from a bank. what will the balance of the loan be after one year(assuming the student has not made any payments yet) a. if bank charges 3.8% interest each year ?