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olga_2 [115]
3 years ago
13

PLEASE ANSWER ASAP, 25 points if you answer and will get brainliest if you show all work. <br /><br />If you drive a

t x miles per hour and apply your breaks, your stopping distance in feet is approximately <br />f(x) = x + \frac{ {x}^{2} }{20}<br />a)By how much will your stopping distance increase if you increase your speed from 20 mi/h to 30 mi/h?<br />b)By how much will your stopping distance increase if you increase your speed from 50 mi/h to 60 mi/h? <br />c)An important driving guideline is that you leave one car length between your car and the car in front of you for every 10 mi/h of speed. Thus, you should leave three car lengths if you are driving at 30 mi/h and 5 car lengths if you are driving at 50 mi/h. Is this guideline consistent with the model f(x)?
Mathematics
1 answer:
amm18123 years ago
6 0
Answer is x{f2}=x^25
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