Mathematics, 05.05.2020 13:59 Rogeartest4

When wiring a house, an electrician knows that the time she will take is given by the formula
Time = 2hour +12 mins per lightswitch
She charges her customers a call out fee of £35, plus £30 per hour.
How much should a customer be charged for wiring a house with 10 lightswitch?

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When wiring a house, an electrician knows that the time she will take is given by the formula
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