Question

12. A swimming pool contains 1500 gallons of water. The pool is being

drained for the season at a rate of 35 gallons per minute. Find a rule for
the linear function that describes the amount of water in the tank. Use it
to determine how much will be in the tank after 25 minutes.

Answer 1

2x² + 3x - 54.

Explanation:

( 2x - 9 ) ( x + 6 )

( 2x ) ( x ) + ( 2x ) ( 6 ) + ( - 9 ) ( x ) + ( - 9 ) ( 6 )

2x² + 12x - 9x - 54

2x² + 3x - 54.