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Soloha48 [4]
3 years ago
6

A plumber charges a flat rate of $79 to make a house call and charges $78 for labor, let y be the total cost of the house call

Mathematics
1 answer:
Setler [38]3 years ago
8 0
<h3>The equation in slope intercept form that models the cost of the work performed is: y = 78x + 79</h3><h3>It costs $ 547 if the plumber works for 6 hours</h3>

<em><u>Solution:</u></em>

Let "y" be the total cost of the house call plus labor

Let "x" be the number of hours worked

A plumber charges a flat rate of $79 to make a house call and charges $78 for labor

<em><u>The slope intercept form is given as:</u></em>

y = mx + c

Therefore,

total cost of the house call plus labor = 79 + 78(number of hours worked)

y = 78x + 79

Thus the equation is found

<em><u>How much does it cost if the plumber works for 6 hours?</u></em>

Substitute x = 6 hours

y = 78(6) + 79

y = 468 + 79

y = 547

Thus it costs $ 547 if the plumber works for 6 hours

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