2 years ago

An electrician charges $45 per hour plus a fixed charge of $30

1 answer:

6 0

45x+30= price for electrician when x= hours

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Tasya [4]

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Black_prince [1.1K]

15x = 7x + 8x

$x^2+15x=-56\\\\ x^2+15x+56=0\\\\ x^2+7x+8x+56=0\\\\x(x+7)+8(x+7)=0\\\\ (x+7)(x+8)=0 \\\\ x=-7 \ or \ x=-8$

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klasskru [66]

Answer:

b.y=4

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These are the answers hope this helps

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2 years ago