Oliver is trying to solve the following equation by completing the square. x2−32x+31=0
Here are the steps Oliver used to complete the square.

Original equation: Line 1: Line 2: Line 3: Line 4: Line 5: Line 6: x2−32x+31x2−32xx2−32x+32(x−16)2(x−1 6)2−−−−−−−−√x−16x0−31−31+3211–√±115 and x=17
Oliver did not get the correct solutions.

Which line contains Oliver's first mistake?

You are updating your garage and the only thing left to paint is your garage day. you're only going to paint the slide that faces the street. the garage door is 9 fert 8inches tall and 120 inches wide. you need to know the surface area of the side of the garage door to determine how much paint to buy. the hardware store sells paint by how much covers a square foot. what is the surface area you should report to the hardware store what is the answer

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?

What is the slope of the line shown below?