Modeling

I everyone i wonder if you could correct me ? 

 

in this linear modeling devil work ! 

 

A(t) = 150000 - 300t 

 

I did : A(0) = 150000 - 300*0 = 150000

So the vertical interecpt is ( 0,150000) 

 

Then A(t) = 0      

0 = 150000 - 300t 

Solve for t : 0 = 150000 - 300t ( add t to the both side ) 

300 t = 150000 ( both side isolated by the t ) 

t = 150000 / 300 : 500 

So the horizontal interect is ( 500,0 ) 

 Right ? 

 

Thank you, 

Best, 

Thalys