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Vladimir79 [104]
3 years ago
10

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-35, 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 door she knocks on, her earnings will increase by $35.
B. For each additional door she knocks on, her earnings will increase by $10.
C. For each additional set of books she sells, her earnings will increase by $10.
D. For each additional set of books she sells, her earnings will increase by $35
Mathematics
2 answers:
Amiraneli [1.4K]3 years ago
8 0
The answer is B. The slope is always the one linked to (x) meaning that for every door she knocks on per week her earnings will increase by $10
Nina [5.8K]3 years ago
6 0
I believe it is B, as C and D both are based on the number of books sold while the only variable to determine the amount of money she earns are the additional doors she knocks on.
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BaLLatris [955]

Answer:

Step-by-step explanation:

a) Mark any two points in line a

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Find the slope

slope = y2 - y1 /x2-x1

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Equation: y-y1 = m(x-x1)

y - 7 = -2(x - 0)

y - 7 = -2x

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c) equation of line b

(2,-1);  slope = -2  {as b line is parallel to line a}

y - y1 =m(x-x1)

y -(-1) = -2*(x - 2)

y + 1 = -2x - 2*-2

y + 1 = -2x + 2

y = -2x + 2 -1

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5 0
2 years ago
What is the equation of the line through (5, 1) with a slope of -3?
Vlad1618 [11]

Answer:

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Step-by-step explanation:

y=_+_(x-_)

y=1+(-3)(x-5)

y-1=3(x-5)

6 0
3 years ago
Monarch butterflies flap their wings about 12 times a second in
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3 years ago
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konstantin123 [22]

Answer:

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Step-by-step explanation:

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The number is 12.

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If this does not immediately come to mind, you can solve for the number, x:

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otez555 [7]

Answer:

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Step-by-step explanation:

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