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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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Zeus Industries bought a computer for $2859. It is expected to depreciate at a rate of 21% per year. What will the value of the
mart [117]
100-21=79
2859(0.79)^3=1409.598
worth $1409.60
7 0
4 years ago
A rope is 84 meters long is cut int two pieces so that one piece is 18 meters longer than the other. What is the length of each
Tpy6a [65]

Answer:

33 meters

51 meters

Step-by-step explanation:

84-18= 66

66/2= 33

33+18= 51

Check your answer:

51+33=84

5 0
3 years ago
Read 2 more answers
Find three consecutive odd integers that have a sum of 9. Order them from least to greatest.
fomenos

Answer:

1, 3, 5

Step-by-step explanation:

They're odd, consecutive, and equal 9.

4 0
3 years ago
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For every quarter he spends, Reggie receives 50 food pebbles to feed the fish. Reggie has thrown 350 food pebbles into the fish
deff fn [24]

Answer:

7 quarters are spent for throwing 350 food pebbles in pond.

Step-by-step explanation:

Given:

Reggie receives 50 food pebbles for every quarter he spends.

Number of food pebbles he has = 350

Let the number of quarters spent for 350 pebbles be 'x'.

Now, using proportion and cross multiplication method, we can find 'x'.

<u><em>1 quarter is equivalent to 50 pebbles thrown in pond.</em></u>

<u><em>So, 'x' quarters is equivalent to 350 pebbles thrown in pond.</em></u>

\frac{1}{50}=\frac{x}{350}\\\\Cross\ multiplying\\\\50x=350\\\\x=\frac{350}{50}\\\\x=7

So, 7 quarters are spent for throwing 350 food pebbles in pond.

6 0
3 years ago
Question 10 Please Help
svet-max [94.6K]

Answer:

1)· 5x + 2y = 9. First we solve for y. 2y= 9 -5x. y=(9-5x)/2. Now that we have the value of y. We substitute on the original equation and resolve. 5x + 2y = 95x + 2y = 9  5x + 2(9-5x)/2 = 9  5x + 9 - 5x = 9  9 = 9

That would be x = 1  

Now substitute and resolve to find y.  

5(1) + 2y = 9

5 + 2y = 9

2y = 4

y = 2

So our answer x=1 and y = 2. (1,2)

Proof :  

5(1) + 2(2) = 9

5+ 4 = 9

9 = 9

Step-by-step explanation:

hoped it helped for the first  one  i didnt now the second one

4 0
3 years ago
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