Question # 17 Solution
Answer:

Step-by-step Explanation:
The given expression

And we have to solve for x₁
So,
Lets solve for x₁.

Multiply both sides by x₂ - x₁




Divide both sides by -m


Therefore, 
Question # 23 Solution
Answer:

Step-by-step Explanation:
The given expression

And we have to solve for n
So,
Let's solve for n.

Multiply both sides by b.

Factor out n.

Divide both sides by -b + x.


Therefore, 
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Answer:
28.3 that's the answer
Step-by-step explanation:
the correct answer should be (b) 6 is extraneous.
If you look at the second row of the solution you see (x-6) as a factor in one of the denominators. That's a problem: if 6 were a solution this denominator would become 0. But denominators being 0 is bad (undefined), so while 6 comes out of the algebraic manipulation as a solution, it is invalid, or extraneous.
-3 is a fine solution.
Answer: $9 per hour
Step-by-step explanation:
$36 divided by 4 hours of work = $9 per hour
Answer:
Please check the explanatio.
Step-by-step explanation:
Solving Part b)
We know that the slope-intercept form of the equation line is

where m is the slope and b is the y-intercept
Given the equation

Re-writing the equation in the slope-intercept form


Here, m=-2 and b=8
Thus, the equation in the slope-intercept form will be:

Solving Part c)
As you sold two pounds of cheddar cheese.
i.e. y=2
substituting y=2 in the slope-intercept form of the line equation


Subtract 8 from both sides


Divide both sides by -2


You sold 3 pounds of swiss cheese.
Solving Part d)

putting x=2.5 in the equation



The sides are not equal
<em>FALSE</em>
Thus, x=2.5 does not make any sense in the context of the problem.