How can the Federal Reserve influence the interest rate on credit cards? A. By adjusting the discount rate banks pay to borrow money
B. By setting up federal credit card companies with low rates
C. By shutting down credit card companies that set rates too high
D. By raising taxes on companies that provide high-interest credit cards​

C. By adjusting the discount rate banks pay to borrow

Step-by-step explanation:

Most credit cards have variable interest rates, and they're tied to the prime rate, or the rate that banks charge to their preferred customers with good credit. ... In other words, when the Fed lowers or raises its benchmark interest rate, the prime rate typically falls or rises with it.

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.  

linear pair postulates