Teresa solved the equation. Her work is shown below. Step1: 4x-4=20
Step2: 4x=16
Step3: x=4
Where did Teresa make an error in her calculation? Explain

Aiden buys two bags of chips at $1.09 each and a 20 ounce soda for $1.20 at the gas station.he knows that the state tax is 5.5. how much change will he receive from a $5 bill?

Find the smallest number by which the given number should be divided to make a perfect cube(with steps or the answer will get reported) a.108 b.2187

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2