Answer:
Ammm, I think the answer you have is wrong, but what I really think is that the equations you put in are not the right ones because the answer for these is "ugly" (decimals etc...). Want to check your equations?
Step-by-step explanation:
Here is a step by step explanation to your equations (I assumed +3z for the second but you can change it). You can edit it for your equations if you want to.
https://simplisico.com/share/q/QiWKOyN5uYgkSG4iBXOmdG0i
If 3 people are going to the store each day
the probablity is 100%
Answer:
Volume = 113.1 cubic cm
Step-by-step explanation:

Graph b would be my guess!
The equation of the line that passes through the points is y=3/5x+3