A car company tested a sports car on a road with different inclines. The test driver tested the car by driving a distance of x miles on a flat road, (x2 + 3) miles downhill, and (x − 7) miles uphill. Which simplified expression is equivalent to the total distance, in miles, for which the car was tested?
A. x^2-3x-23 : will be a polynomial
B. x^2-3x-23 : may or may not be a polynomial
C. x^2-13x+9 : will be a polynomial
D x^2-13x+9 : may or may not be a polynomial
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Ответ:
Hola! my name is Marissa and i am here to help!:)
the answer to your question is periosteum!
Explanation:
the periosteum is the membrane that surrounds the bone (when the bone shatters this layers can help prevent the shards going elsewhere)
brainliest?