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The cost of having a plumber spend h hr at your house if the plumber charges ​$30 for coming to the house and​ $x per hour for labor. The expression for the cost of the plumber coming to the house is how many dollars.

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5 votes

Answer:


C(h)=\$30+xh

Explanation:

Let

C-----> the cost of having a plumber spend h hours at your house

h----> the number of hours

x----> the cost per hour of labor

we know that

The linear equation that represent the cost C is equal to


C(h)=\$30+xh

In this linear equation in the slope-intercept form (y=mx+b)

the slope is equal to
m=x(\$)/(hour)

the y-intercept b is equal to
b=\$30 ---> charge for coming to the house

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