Answer:
option 1 and option 2 should be correct
Answer:probably x’s all of them
Step-by-step explanation:
Answer:

Step-by-step explanation:
The Cartesian product between two discrete sets, is given by all possible ordered pairs originated with the combinations of the elements of the two sets, thus the requested Cartesian product is:


You can see the attached file
Combine like terms / simplifying: 5p+4r+6s+7
The percentage of the markup was 60%.