Plumber a = 60x
Plumber b = 40+55x
An 8 hour job would cost the same for both plumbers. It would cost $480. Plumber a should be hired for a 5 hour job.
Slope = (-2 + 7)/(9 - 3) = 5/6
y = mx + b
-7 = 5/6(3) + b
b = -7 - 5/2
b = - 19/2
equation
y = 5/6x - 19/2
standard form
5/6x - y = 19/2 or 5x - 6y = 57
I think you multiply 140 and 80% and then add thst to the 140
Answer:

<em>The only limitation is for r which must not be zero</em>
Step-by-step explanation:
<u>Solving Equations
</u>
We need to perform some steps to isolate the required variable and solve the equation. It's commonly the application of algebraic operations contrary to the ones already present in the expression to work with
We have

And we need to solve for y
Let's add -s to both sides of the equation

Simplifying

Now we divide by r

Solving

The only limitation is for r which must not be zero
Answer:
21
Step-by-step explanation:
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