Your answer is A. Organ systems must interact with one another.
Hope I helped :)
6.8 oz would be the final answer but an expression could possibly be 8-4.7+3.5
Answer:
In first equation if we put the value of x and y (x=2,y=2)than,
3x+y=8
3×x+y=8
3×2+2=8
6+2=8
8=8
in second equation the value of x=2,y=1
x2+xy=6
x2+x×y=6
4+2×1=6
4+2=6
6=6
It is equivalent too 5.3 and 5.30