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#### needalgebra

##### Member

- Aug 13, 2013

- 45

Here is my previous post! please look at pages 3 - 4 to see what im talking about.

http://mathhelpboards.com/pre-algebra-algebra-2/mathematical-modeling-6006-4.html

I figured out how to input the quadratic and logarithmic equations into wolfram, this is what i got. Let me know if its correct please!

f(x)=1/80x2+15, f(x)=30 1+ln(x/25)ln(12/5) where x= 0 to 50

f(x)=1/80x2+15, f(x)=30 1+ln(x/25)ln(12/5) where x= 0 to 50 - Wolfram|Alpha

Now for the no included gigabytes graph, i first have to get the equations. I was wondering if these are set up correctly before solving them.

Quadratic model:

f(0) = a (0)^2 + b = b = 20

f(60) = a (60)^2 + b = a + b = 60

Logarithmic model:

f(0) = a + b Ln (0 + 1) = a = 30

f(60) = a + b Ln(60 + 1) = a + b Ln = 60

Thanks

http://mathhelpboards.com/pre-algebra-algebra-2/mathematical-modeling-6006-4.html

I figured out how to input the quadratic and logarithmic equations into wolfram, this is what i got. Let me know if its correct please!

f(x)=1/80x2+15, f(x)=30 1+ln(x/25)ln(12/5) where x= 0 to 50

f(x)=1/80x2+15, f(x)=30 1+ln(x/25)ln(12/5) where x= 0 to 50 - Wolfram|Alpha

Now for the no included gigabytes graph, i first have to get the equations. I was wondering if these are set up correctly before solving them.

Quadratic model:

f(0) = a (0)^2 + b = b = 20

f(60) = a (60)^2 + b = a + b = 60

Logarithmic model:

f(0) = a + b Ln (0 + 1) = a = 30

f(60) = a + b Ln(60 + 1) = a + b Ln = 60

Thanks

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