Answer:
2 hours at 15mph
4 hours at 4mph
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Answer:
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<span>(-5y^3 - 7y) + (7y^3 + 8y +9)
</span>
-5y^3+7y^3-7y+8y+9 <---- Group like terms
-5y^3+7y^3+y+9 <---- Add similar elements
Answer: 2y^3+y+9
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Answer:
The answer is -7.
Step-by-Step explanation: