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) = 10x - 35, where x is the
number of doors she knocks on
the week in dollars.
during the week and E(x) is her earnings for
What does the slope of Jessica's function represent?
O A. For each additional set of books she sells, her earnings will
increase by $10.
O B. For each additional set of books she sells, her earnings will
increase by $35.
C. For each additional door she knocks on, her earnings will increase
by $10.
D. For each additional door she knocks on, her earnings will increase
by $35.