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When only half full, an Olympic sized swimming pool holds 330,000 gallons of
water. Water is being pumped out of an Olympic pool at a constant rate.
Every increase of five minutes in the number of minutes since half full, the
amount of water in the pool decreases by 120 gallons. Which of the following
statements is definitely true? (Note: can be read as “change in y” and
as “change in x.”)
(a) (b) (c) (d) Only statements (a) and
(b) are definitely true.Only statements (c) and (d) are definitely true.