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slava [35]
2 years ago
8

Sanjay consulted three electricians about upgrading the wiring in his home. Each electrician uses a linear formula that incorpor

ates a flat base fee and an hourly rate to determine the cost of service. Those formulas are shown in the table.
Repair Cost Formulas
electricion Cost in y dollars for an x-hour service
1 y=25x+30

2 y=30x+25

3 y=25x+20

a.Each electrician charges a different hourly rate.
b.Each electrician charges a different base fee.
c.All three electricians charge the same hourly rate.
d. All three electricians charge the same base fee.



HELP ME ILL GIVE 50 POINTS!!!!!!!!!!!!!!!!!1
Mathematics
2 answers:
Andrew [12]2 years ago
7 0

Answer: b.Each electrician charges a different base fee.

Reptile [31]2 years ago
4 0
<u><em>Answer:</em></u>
b.Each electrician charges a different base fee:

<u><em>Explanation:</em></u>
<u>Each of the equations has two parts:</u>
1- base fee that is independent of any variable (this would be the number that has no variable next to it)
2- an hourly rate depending on the number of hours x (this would be the number that has an x next to it)

<u>For the first electrician:</u>
y = 25x + 30
base fee = $30
hourly rate = $25

<u>For the second electrician:</u>
y = 30x + 25
base fee = $25
hourly rate = $30

<u>For the third electrician:</u>
y = 25x + 20
base fee = $20
hourly rate = $25

<u>Now, let's check the choices:</u>
<span><u>a.Each electrician charges a different hourly rate:</u>
</span>This is incorrect as electricians 1 and 3 charge the same hourly rate ($25)

<span><u>b.Each electrician charges a different base fee:</u>
This is correct as all three base fees are different ($30, $20 and $25)

</span><span><u>c.All three electricians charge the same hourly rate:</u>
This is incorrect as electrician 2 has a different hourly rate

</span><span><u>d. All three electricians charge the same base fee:</u>
This is incorrect as the base fees for the three electricians are different ($30, $25 and $20)

Hope this helps :)</span>
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