Answer: Andy will pay $12.675 in interest for one interest
Step-by-step explanation:
Since we have given that
Remaining balance of Andy on his credit card = $845
APR of his credit card = 18%
So, Rate of interest for one month will be
[tex]\frac{18}{12}=1.5\%[/tex]
Interest will be paid for one month is given as
[tex]\frac{1.5}{100}\times 845\\\\=\frac{1267.5}{100}\\\\=\$12.675[/tex]
Hence, Andy will pay $12.675 in interest for one interest .