Question 165263
It follows the eqn: {{{x^2-3x-28=0}}}
in real life situation, you can represent {{{x}}}= money
So in {{{(x+4)(x-7)=0}}}, {{{x}}} has two representations:
{{{x=-4}}}, expenses per day in $ (money going OUT of you pocket)
{{{x=7}}}, rate per day(work) in $ (money coming IN your pocket)
See graph, line for expenses is going up, likewise money coming in goes up.

{{{drawing(300,300,-10,10,-10,10,grid(1),graph(300,300,-10,10,-10,10,x^2-3x-28))}}}
Thank you,
Jojo