anonymous
  • anonymous
Your friend has $100 when he goes to the fair. He spends $10 to enter the fair and $20 on food. Rides at the fair cost $2.00 per ride. Which function can be used to determine how much money he has left over after x rides? f(x) = -2x + 70 f(x) = 2x + 70 f(x) = -2x - 70 f(x) = -30x + $100
Mathematics
jamiebookeater
  • jamiebookeater
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Baby_Bear69
  • Baby_Bear69
Do you have any ideas?
nkhanfar
  • nkhanfar
I think its c because he already has 70 dollar and you need to take it off
Setsuna-Yuregeshi
  • Setsuna-Yuregeshi
What do you think?

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anonymous
  • anonymous
Well I think it is A
Setsuna-Yuregeshi
  • Setsuna-Yuregeshi
@nkhanfar It can't be, If it was then you would end up with -$$ say he gets on two rides, thats -2 times 2 which is negative 4-70 which is -74...
nkhanfar
  • nkhanfar
which one is it then
anonymous
  • anonymous
I think it would be A
Setsuna-Yuregeshi
  • Setsuna-Yuregeshi
@FEARLESS_JOCEY, That is correct. Because he has $70, and if he gets on 4 rides, -2*4=-8+70 which is the same as $70-$8, so that is correct.
anonymous
  • anonymous
Yay!! Thanks.
Setsuna-Yuregeshi
  • Setsuna-Yuregeshi
\[-2\times4=8 \] Then you would get \[-$8+70.00 \] And that's how much money he would have left over...
Setsuna-Yuregeshi
  • Setsuna-Yuregeshi
You're welcome...
Setsuna-Yuregeshi
  • Setsuna-Yuregeshi
Thanks for the medal!!! |dw:1436989823372:dw|
anonymous
  • anonymous
Your welcome

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