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avatar+262 

If f(a,b)=2a-3b^(2)+7 and f(b,3)=90 what is b? 

 

I'm confused about whether the order in a function is relevant or whether the symbols are. Basically I don't understand if a=b or if a=a in this specific equation.. (sorry if that's confusing)

 Mar 25, 2019
edited by ANotSmartPerson  Mar 25, 2019
 #1
avatar+533 
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The symbols are not relevant; f(a, b) was just an example. It wasn't part of the question. 

 

Now I think you can just plug in the stuff to get 2b - 27 + 7 = 90 => b = 55. :)

 Mar 25, 2019
 #2
avatar+262 
+1

Thanks bunches!

 Mar 25, 2019

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