• anonymous
Jessica is selling books during the summer to earn money for college. She earns a commission on each sale but has to pay for her own expenses. After a month of driving from neighborhood to neighborhood and walking door-to-door, she figures out that her weekly earnings are approximately a linear function of the number of doors she knocks on. She writes the equation of the function like this: E(x) = 7x - 25, where x is the number of doors she knocks on during the week and E(x) is her earnings for the week in dollars. Which of the following are reasonable interpretations of the y-intercept
  • Stacey Warren - Expert
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  • katieb
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  • anonymous
If she does not knock on any doors at all during the week, she will lose $25. Her expenses are $25 per week. She will lose $7 per week if she does not knock on any doors. She can earn $7 per week even if she does not knock on any doors.
  • retirEEd
What is Y when X = 0? Earning is linearly dependent on the number of doors she knocks on minus expenses. Earnings = 7x - 25

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