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a pilot was scheduled to depart at 4: 00 pm, but due to air traffic, her departure has been delayed by 15 minutes. air traffic control approved a new flight plan that will allow her to arrive two times faster than she calculated in her original flight plan. let x represent the time, in minutes, of her original flight. create an equation that can be used to predict the number of minutes after 4: 00 pm she will arrive at her destination.

a. y = 2x + 15
b. y = 1/2x + 15
c. y= 1/2x - 15
d. y= 2x - 15