Answer:
35 blue shirts
Step-by-step explanation:
7 x 3 = 21
7 x 5 = 35
35
divide 21 by the ratio you are dividing and multiply the other by the number.
y intercept is 0
y=2/3x+b
if x=0 y=0 (0,0)
if x=3, y=2 (3,2)
2=2+b
b=0