Your answer is A. Organ systems must interact with one another.
Hope I helped :)
Answer:
Step-by-step explanation:
-2/5 - 4/5 + -9/10
= -2/5 - 4/5 - 9/10
= {-2(2) -4(2) - 9)/10
= (-4 - 8 - 9)/10
= -21/10
= -2 1/10
18+36=54
i tried to do all of these and none of them add up to 54
9 * 25 = 225
225 - 6 = 219
There are 219 chairs left.
