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

The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!