The equation for speed is s=d/t, s=276/6.5. Then, you divide 276 in 6.5: s is approximately 42 miles/hour. So, he drove 12 miles/hour faster getting there than coming back home.
Answer:
Step-by-step explanation:
0
< 0
x^2-2x+1<1
(x-1)^2<1
-1<x-1<1
0<x<2
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