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I'm not super with math but I need to make a function in my web app to get the value of a point on a curve when I know the curve points that are set. Here is what I did, I put a set of point with the x and y set at the know points then did an exponential trend line with limits of 1.15 to 3 for the x value. The y value ranges from 0-1000. I get for the formula output from excel as

y = 5.3785e0.7204x R² = 0.9898  

Here are the points I have

x        y 10      3 25      2.95 50      2.75 100     2.5 200     2 300     1.5 1000    1.15 

I short i need to have my web app say, what is the y value when x is 176. I know this is probably simple for you math guys but I'd be thankful the help. Cheers

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