Answer:
Hope this helps!
Step-by-step explanation:
Apply the distributive property<span>.
</span><span>7x−5−(3x)−1(−2)</span><span>
</span>
<span>Simplify.
</span><span>7x−5−3x−1(−2)
</span>Multiply <span>−1</span><span> by </span><span>−2</span><span> to get </span><span>2.</span><span>
</span><span>7x−5−3x+2</span><span>
</span>
Add <span>7x</span><span> and </span><span>−3x</span><span> to get </span><span><span>4x</span>.
</span><span>4x−5+2</span><span>
</span>
Add <span>−5</span><span> and </span>2<span> to get </span><span><span>−3</span>.
</span><span>4x−3
</span><span>4x−3</span>
Without calculating we can say that the system with the original cost $60 ( the cheaper system ) had a greater percent decrease.
This is because $10 is a greater percentage of $60 than it is of $90 ( if we calculate it is 16.66% in the first case and 11.11% in the second case).
In order to break his record joey must eat d>7 hot dogs
