Question 1049446
friend

time {{{x+1}}}
speed {{{xmph}}}
distance {{{x(x+1)}}}



you

time {{{x}}}
speed {{{6mph}}}
distance {{{6x}}}

{{{x(x+1)}}}={{{6x}}}
{{{(x^2-5x)}}}={{{0}}}

*[invoke quadratic "x", 1, -5, 0 ]