anonymous
  • anonymous
The balance in two separate bank accounts grows each month at different rates. The growth rates for both accounts are represented by the functions f(x) = 2x and g(x) = 4x + 12. In what month is the f(x) balance greater than the g(x) balance?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
can u help me @Shirley27
Shirley27
  • Shirley27
Here, it would be an inequality of 2x > 4x +12
anonymous
  • anonymous
so it would be 6

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More answers

Shirley27
  • Shirley27
solving it would look something like this: 2x > 4x + 12 -2x > 12 x < -6 except that doesn't seem right...
anonymous
  • anonymous
why
Shirley27
  • Shirley27
you can't have negative months
anonymous
  • anonymous
these are the answers 0mnths 1mnths 2mnths 3mnths
anonymous
  • anonymous
and true
anonymous
  • anonymous
hello are u still there
Shirley27
  • Shirley27
hold on, i'm getting a graph
anonymous
  • anonymous
oh
Shirley27
  • Shirley27
1 Attachment
anonymous
  • anonymous
so it would be 2
Shirley27
  • Shirley27
the red is 2x and the blue is 4x + 12, the place where the red is above the blue is in the negative
anonymous
  • anonymous
or 3
Shirley27
  • Shirley27
well, what does x represent? the month?
anonymous
  • anonymous
correct
Shirley27
  • Shirley27
is y the growth rate or the actual amount?
anonymous
  • anonymous
i think so?
Shirley27
  • Shirley27
If y was the growth rate and both accounts started at the same amount, then the answer should be 0?
anonymous
  • anonymous
oh i get where ur coming from
anonymous
  • anonymous
thank
anonymous
  • anonymous
its not 0
Shirley27
  • Shirley27
oh, then i'm afraid I can't help you :(
anonymous
  • anonymous
0h oh k
anonymous
  • anonymous
maybe it is not \[f(x)=2x\] could it be \[f(x)=2^x\]?
anonymous
  • anonymous
because for positive numbers \(2x\) is always less than \(4x+12\)

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