Answer:
It is B i think i hope this helps
Step-by-step explanation:
Answer:3x+5y=210
We dont know how much of each fish they bought so we would add an x and a y. A answer you can put are:
35 pounds of tilapia and 21 pounds of salmon.
we have
-3+4i
let magnitude be |z|
|z|=
|z|=5 unit