An electrician changes a flat fee plus an hourly rate for a service call. She changes a total of $94 For a 3-hour service call o n Monday and $130 for a 5-Your service call on Tuesday. how much should she change for 2-hour service call?
2 answers:
$56 (might be wrong but thatś what I got)
flat rate is $40 + $ 18 per hour
3 hour = $18 x 3 = $54 + flat rate $ 40 = $ 94
5 hour = $ 18 x 5 = $90 + flat rate $ 40 = $130
2 hour = $ 18 x 2 = $ 36 + flat rate $ 40 = $ 76
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I think is Y=5x+20
Answer: x= -1
y= -2
Step-by-step explanation:
-4x+3y= -2
y=x-1
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-4x+3(x-1)= -2
-4x+3x-3= -2
-x=1
x= -1
y=-1-1
y=-2
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