If these four countries trade only within this group, what is the difference between the highest balance of trade and the lowest balance of trade? a.
$6,221,000,000
b.
$5,003,000,000
c.
$3,772,000,000
d.
$2,123,000,000

Will mark the brainliest.paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each?