a contractor bought 8.2 ft^2 of sheet metal. she has used 3.5 ft^2 so far and has $94 worth of sheet metal remaining. the equation 8.2x-3.5x=94 represents how much sheet metal is remaining and the cost of the remaining amount. how much does sheet metal cost per square foot?

You and a friend race across a field to a fence and back. your friend has a 50-meter head start. the equations shown represent you and your friend's distances dd (in meters) from the fence tt seconds after the race begins. find the time at which you catch up to your friend. you: d=∣−5t+100∣d=∣−5t+100∣ your friend: d=∣−313t+50∣∣

The length of each stair is 11 inches. what is the rise, r, for each stair? round to the nearest inch. 2 inches 7 inches 17 inches 24 inches

What is the missing step in this proof ?