Answer:
Odd
Step-by-step explanation:
One way I remember is that:
Even functions: Have symmetry over the y-axis
Odd functions: Don't have symmetry over the y-axis
Perimeter of a rectangle is
2*width + 2*length
then multiply the perimeter by the cost per foot
2*(150ft) + 2*(200ft)
300ft + 400ft
700ft
700ft * $10/ft
$7000
10.99x = 3.99x + 280
7x = 280
x = 40
They must sell 40 T-shirts to break even