What's the answer to: 39-7x=-4(7x+7)+4
1 answer:
Simplify <span>-28x-28+4−28x−28+4</span> to <span>-28x-24<span>−28x−2<span>4
</span></span></span> Add <span>28x28x</span> to both sides<span>39−7x+28x=−24Simplify <span>39-7x+28x39−7x+28x</span> to <span>39+21x<span>39+21<span>x
</span></span></span><span>39+21x=−24Subtract 39<span> from both sides
</span><span>21x=−24−39Simplify <span>-24-39−24−39</span> to <span>−6<span>3
</span></span><span>21x=−63Divide both sides by <span>21
</span>x=−
Simplify tex] \frac{63}{21} [/tex] to 3
<span>x=−3
</span>
</span></span></span></span>
</span></span></span> Add <span>28x28x</span> to both sides<span>39−7x+28x=−24Simplify <span>39-7x+28x39−7x+28x</span> to <span>39+21x<span>39+21<span>x
</span></span></span><span>39+21x=−24Subtract 39<span> from both sides
</span><span>21x=−24−39Simplify <span>-24-39−24−39</span> to <span>−6<span>3
</span></span><span>21x=−63Divide both sides by <span>21
</span>x=−
Simplify tex] \frac{63}{21} [/tex] to 3
<span>x=−3
</span>
</span></span></span></span>
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Answer:
The amount of jobs from fitting industry shall decline in 5.5 percent from 2015 to 2025.
Step-by-step explanation:
Due to the assumption of a yearly average rate, a linear function model shall be used. The expected amount of jobs () after a certain amount of years (t) is given by the following formula:
Where:
- Initial amount of jobs in pipe fitting industry, measured in thousands.
- Average yearly rate, measured in thousands per year. (A decline is indicated by a negative sign)
If ,
and
, then:
The percent change in jobs from pipe fitting industry is calculated as follows:
The amount of jobs from fitting industry shall decline in 5.5 percent from 2015 to 2025.