Question 211284
The value of Jon’s stock portfolio is given by the function V(t)= 50 + 77t + 3t^2
where v is the value of the portfolio in hundreds of dollars and t is the time in months. How much money did Jon start with? What is the minimum value of Jon’s portfolio?
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The minimum value is at t=0.  I don't see how or why negative values of time would be considered.
at t=0: v(0) = $50
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That is the minimum, any value of t>0 gives and increase in worth.