Question 1014037
I think you just add the equations and
set {{{ t = 7 }}}
{{{ 102t^2 + 125t^2 - 225t + 72t + 3090 + 4978 }}}
{{{ 227t^2 - 153t + 8068 }}}
Use the quadratic formula to solve for {{{ t }}}
Hope I got it