Check all of the ordered pairs that satisfy the equation below.
y = 2/3x
a. (21, 3/2)
b. (7,14)
c. (21,14)
d.(28,42)
e. (42,28)
f. (14,21)

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!