Answer:
2(x-y) and 2x-2y are equivalent.
Step-by-step explanation:
To figure out 2(x-y) and 2x-2y, you can apply the distributive property on
to get:
Or we can factor
to get:
This implies that, the two expressions are equivalent.
A plumber charges $17 to visit a client's home, plus an additional $36 per hour. What is the
2 answers:
Because this is a linear problem, I'd use the slope-intercept formula:
where
m = slope (rise/run)
y = dependent value
x = independent value
b = constant value
Because the plumber charges $17 upon arrival, it is our constant. The $36 is our slope (<em>per</em><em> </em><em>hou</em><em>r, per minute, per etc.</em> is generally a give away). Additionally because the total cost of the plumber's visit depends on how long s/he stays at a client's home, the $89 is our y value. Therefore the equation should look like this:
Solve for x by subtracting 17 from both sides of the equation then dividing by 36.
The plumber spent two hours at his/her client's home.
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