Transaction 3 - $143
transaction 4 - $-86
transaction 5 - $86
2=2*1,1*2
24=1*24,2*12,6*4,3*8
19=2*8+3
2x²+19x+24
(2x+3)(x+8)
or
2x(x+8)+3(x+8)
2x²+16x+3x+24
2x²+19x+24
A right triangle has a 90degree angle
We have that
using a graph tool
see the attached figure
the answer is the first option
y<=3x
y>-2x-1