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Mathematics, 31.01.2020 14:43 carlosiscr7

The equation y = 55x + 85 describes the amount of money a plumber charges, where y is the total amount he charges and x is the number of hours he works. the table shows the total amount of money an electrician charges.

how much does each charge per hour?

number of hours worked 1 2 4 7
total amount charged 115 180 310 505

the plumber charges $ hour.
the electrician charges $ hour.

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