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max2010maxim [7]
3 years ago
13

Trevor earns $7.80 an hour take home pay and works 20 hours each week. Trevor wants to buy a new laptop computer to take to coll

ege that costs $780. How many weeks will it take for Trevor to achieve his goal?
Mathematics
2 answers:
KonstantinChe [14]3 years ago
5 0

Answer:

B. 5 weeks

Step-by-step explanation:

Just took the quizz!!

Naily [24]3 years ago
4 0
It would take him 5 weeks. why?
7.89*20= $156 per week
156*5 weeks= $780
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Answer:

Option B is correct.

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Step-by-step explanation:

Given the system of equation:

-x+2y =6                 .....[1]

6y =x+18               ......[2]

We can write equation [1] as;

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Substitute equation [3] in [2] we get;

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or

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Subtract 2y from both sides we get;

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Simplify:

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Divide both sides by 4 we get;

\frac{4y}{4} =\frac{12}{4}

Simplify:

y =3

Substitute the value of y in equation [3] to solve for x;

x = -6 + 2(3)

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