dolphinblues dolphinblues
  • 19-10-2016
  • Mathematics
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The function d(x)=1375-110 represents the distance a high speed train is from its destination after x hours. How long does the train travel before reaching its destination

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apologiabiology
apologiabiology apologiabiology
  • 19-10-2016
d(x)=1375-110x
when it reaches 0 it has reached destination
0=1375-110x
add 110x to both sides
110x=1375
divide both sides by 110
x=12.5
answer is 12.5 hour
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