Answer:
7.50x + 12.50y = 300
Step-by-step explanation:
From the list of 9 weights we see that
Puppies in range 10-11 = 3
range 12-13 = 4
range 14-15 = 2
The second histogram described is the correct one.
Answer: 60 weeks.
Step-by-step explanation: 150 divided by 2.50 = 60