It is called effective interest rate.
For example, you invest in a bond wich pays 5% annual interest rate and it compounds semiannually.
The first semester you win 2.5% over the capital invested and in the second semester you win 2.5% over the capital plus the interested earned in the first semester. Then the effecive interest rate is higher than 5%.
A=10
B=-12
C=3.6
I need to make the answer 20 letters so here’s a cookie
Answer:

Step-by-step explanation:

Answer: -35+24p
Step by step in picture below