Here you go. Let me know if you have questions
It’s 9 because the whole number is eight, but seven is going to bring the number up ( five or more raise the score, four or less let it rest.) Good luck !
Answer:
I believe the answer to this question is: 1 x 10^21 equal to 1000000000000000000000.
The regular price is $4 i.e., $3.6 divided by 0.9 = $4