S = large shrimp and p = popcorn shrimp
s + p = 10.....multiply by -1
5s + p = 30
---------------
-s -p = -10 (result of multiplying by -1)
5s + p = 30
---------------add
4s = 20
s = 20/4
s = 5
s + p = 10
5 + p = 10
p = 10 - 5
p = 5
so there was 5 lbs of large shrimp (s) and 5 lbs of popcorn shrimp (p) in the mixture
0.55555555555 but you can round is up and you will be cool
C because of the way it goes up
-1/2x+7. Because x=(y2-y1)/(x2-x1)
