Tuff I don’t understand it but for question four the answer is
Answer: Each pen cost $3.12
Step-by-step explanation:
If you divide 31.20 by 10 you will get 3.12. Each pen costs the same amount so that amount ten times would equal $31.20. To find out how much one pen costs you need solve for only one out of these ten pens which is why you divide.
The answer is 3.5 please click on the file for work.
Answer:
D
Step-by-step explanation: