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anonymous

  • one year ago

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 $ per hour. The electrician charges $ per hour.

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  1. anonymous
    • one year ago
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    Does the plumber charge $55?

  2. anonymous
    • one year ago
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    and the electrician $85?

  3. welshfella
    • one year ago
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    for the plumber y = 55x + 85 for 1 hour the charge is 55(x) = 55(1) = 55

  4. anonymous
    • one year ago
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    does the electrician charge $60, $65 or $85?

  5. welshfella
    • one year ago
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    for the electrician y = ax + z 115 = a + z 180 = 2a + z where a is charge per hour and z = standard charegr subtract first equation for the second a = 180 - 115 = 65 electriciam charges 65 dollars per hour

  6. anonymous
    • one year ago
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    Okay! Thank You! ^.^

  7. welshfella
    • one year ago
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    yw

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