What is the value of r in the equaition 1/7(105+r)=20

You’re repairing a large rectangular aquarium. the final step is to cover the glass with a protective film. the front and back of the aquarium measure 4 meters by 2 meters, and the sides of the aquarium measure 3 meters by 2 meters. how many square meters of protective film do you need? ( )

What is the range of the relation in the table below? x y –2 0 –1 2 0 4 1 2 2 0

Find the slope and the y-intercept if there's one and the equation of the line given these two points( 3, 2) and( 3, -4)