Step-by-step explanation: Sorry if I'm late, but here's proof. If you see that both the lines intersect and split ways at -6 x-int on the graphing calculator, its the same graph. So the answer would be >=.
Let be Z the money ; We have ( 40 / 100 ) x Z = $85 ; ( 4 / 10 ) x Z = $85 ; ( 2 / 5 ) x Z = $85 ; Z = $( 85 x 5 ) ÷ 3 ; Z = $425 ÷ 3 ; Z = $141,66 ≈ $142 ;
