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stepladder [879]
3 years ago
14

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. What does the slope of Jessica's function represent?
A. for each additional set of books she sells her earnings will increase by $25
B. for each additional door she knocks on her earnings will increase by $7
C. for each additional door she knocks on her earnings will increase by $25
D. for each additional set of books she sells her earnings will increase by $7
Mathematics
2 answers:
Gwar [14]3 years ago
8 0

Answer:

For each additional door she knocks on her earnings will increase by some dollars but not $25

Step-by-step explanation:

Here the equation is

e(x)=7x-25

here we see that the slope of Jessica Function is 7 , hence it is the angle , the line makes with the x axis is positive and it is less than 90°

Thus we see that for every unit change in x , there is some increment in the value of e(x).

Agata [3.3K]3 years ago
3 0

I am pretty sure the answer is D, but I'm not 100% sure

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