2: c
Step-by-step explanation:
3: a
by Supplementing each answer Into the equation
Answer:
8j -
- 
Step-by-step explanation:
hope this helps! :D
Answer:
(12-3)/1.5= 6
Step-by-step explanation:
You subtract $3 from $12 for the first fee and then divide $9 by $1.50 to find how many hours you can stay.
20/5 = 4 half lives
so
<span>300 * (1/2)^4
</span>= 300 * 0.0625
=18.75 grams