Answer:
See explanation
Step-by-step explanation:
Assuming your system is:


Then make x the subject in the first equation to get:

Put this equation into the second equation to get:





This means that:


The answer that I would choose would be C.
Answer:
A. You can get cash-back rewards
Step-by-step explanation:
Cash Back rewards are more formally used to save money with a credit card.
Stop with the links don’t work