Answer:
the length of all sides added together
2y=10x-14
5x-y=7
Divide both sides by 2 in the 1st equation
y=5x-7
Now substitute is to 2nd equation
5x-5x+7=7
0=0
Therefore there is no solution or it is inconsistent
Answer:
$110
Step-by-step explanation:
We are looking for the decrease in money per desk purchased. Because the x-axis is the number of desks purchased, what we have to find is the (opposite) of the slope. The formula to represent slope can be written as:

We can substitute the points given, (2, 480) and (5, 150) and simplify:

We would multiply by -1 because we are asking for the decrease, and negative increase is decrease. -1 * -110, gives us $110