###### Example2.6.6

A bathtub contains 2.5 ft^{3} of water. More water is being poured in at a rate of 1.75 ft^{3} per minute. Write an equation representing when the amount of water in the bathtub will reach 6.25 ft^{3}.

A bathtub contains 2.5 ft^{3} of water. More water is being poured in at a rate of 1.75 ft^{3} per minute. Write an equation representing when the amount of water in the bathtub will reach 6.25 ft^{3}.