C is the answer to the question
D. x=<span>−<span>4
Why?
</span></span>Let's solve your equation step-by-step.
<span><span>2<span>(<span>x−7</span>)</span></span>=<span><span>10x</span>+18
</span></span>Simplify both sides of the equation.
<span><span>2<span>(<span>x−7</span>)</span></span>=<span><span>10x</span>+18
</span></span><span>Simplify:
</span><span><span><span>2x</span>−14</span>=<span><span>10x</span>+18
</span></span>Subtract 10x from both sides.
<span><span><span><span>2x</span>−14</span>−<span>10x</span></span>=<span><span><span>10x</span>+18</span>−<span>10x
</span></span></span><span><span><span>−<span>8x</span></span>−14</span>=18
</span>Add 14 to both sides.
<span><span><span><span>−<span>8x</span></span>−14</span>+14</span>=<span>18+14
</span></span><span><span>−<span>8x</span></span>=32
</span>Divide both sides by -8.
<span><span><span>−<span>8x</span></span><span>−8</span></span>=<span>32<span>−8
</span></span></span><span>D. x=<span>−<span>4</span></span></span>
Answer:
Just took the quiz, answer is 6.
Step-by-step explanation:
the plus sign (+) means above seal level
so the sign should say 2100 feet above sea level
