Answer:
28 tickets
Step-by-step explanation:
252/9=28
Reason number 1 (before) is that you could contaminate your samples if you have foreign material on your hands.
Reason number 2 (after) is that you could spread<span>/or ingest dangerous chemicals or substances that you have handled in the lab.</span>
3(b+6) = 3*b + 3*6 = 3b + 18
Answer:
i have made it in above picture
hope it helps