SOLUTION: f(x)=-30t^2+120t+0 how would you explain when f(x)=60

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Question 363193: f(x)=-30t^2+120t+0 how would you explain when f(x)=60
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
f%28t%29=-30t%5E2%2B120t%2B0+
Find t when,
-30t%5E2%2B120t%2B0=60
30t%5E2-120t%2B60=0
t%5E2-4t%2B2=0
%28t%5E2-4t%2B4%29%2B2=4
%28t-2%29%5E2=2
t-2=0+%2B-+sqrt%282%29
highlight%28t=2+%2B-+sqrt%282%29%29