PLEASE HELP I DONT UNDERSTAND!! WORTH 50 POINTS!!
Jessica is selling books during the summer to earn money for college. She earns a commission on each sale but has to pay 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) = 10x - 30, 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 of Jessica's function?
Check ALL that apply
