Hannah received $30 for her birthday and bought 3 shirts that were all the same price. if she had $9 left over, which equation shows how to determine how much each shirt cost? a.3x = 39 b.3x = 30 c. x + 9 = 30 d.3x + 9 = 30

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?

What is the value of x? enter your answer in the box.