Mathematics, 08.11.2019 11:31 pennygillbert
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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 - 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?
choose all that apply.
a. her expenses are $30 per week.
b. if she does not knock on any doors at all during the week, she will lose $30.
c. she can earn $10 per week even if she does not knock any doors
d. she will lose $10 per week if she does not knock on any doors.
Answers: 3
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Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?
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Mathematics, 21.06.2019 16:50
Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.
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jessica is selling books during the summer to earn money for college. she earns a...
jessica is selling books during the summer to earn money for college. she earns a...
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