7. Joe walks up to a small aquarium tank that can hold about 20 gallons. When it is active, a drain empties water from the tank at a constant rate. When Joe first sees the tank, it contains 14 gallons of water 5 minutes later, the tank contains 10 gallons of water. At what rate is the amount of water in the tank changing?

Demonstrate the proof of your new polynomial identity through an algebraic proof and a numerical proof in an engaging way! make it so the whole world wants to purchase your polynomial identity and can't imagine living without it! you must: label and display your new polynomial identity prove that it is true through an algebraic proof, identifying each step demonstrate that your polynomial identity works on numerical relationships create your own using the columns below. see what happens when different binomials or trinomials are combined. square one factor from column a and add it to one factor from column b to develop your own identity. column a column b (x − y) (x2 + 2xy + y2) (x + y) (x2 − 2xy + y2) (y + x) (ax + b) (y − x) (cy + d)

Need on this geometry question. explain how you did it.

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