Respuesta :
Nicole paid an interest of $456.20.
What is compound interest?
'Compound interest is the addition of interest to the principal sum of a loan or deposit, or in other words, interest on principal plus interest.'
According to the given problem,
The sales tax = 9.08% of $1,255:
⇒ 1255 *.0908= $113.954
The cost of the mattress is:
1255+113.954= $1368.954
Now we can consider:
P = $1368.954
r = 0.1156 or 11.56%
t = 2.5 years
n = 12*2.5 = 30
A = the future value
A = 1368.954[tex](1+\frac{0.1156}{12}^{(2.5*12)})[/tex]
A = $1825.15
The interest paid is the difference:
⇒ 1825.15 - 1368.954 = $456.20
⇒ $456.20 interest paid by Nicole.
Hence, we can conclude that Nicole paid $456.20 as interest.
Learn more about compound interest here:
https://brainly.com/question/14295570
#SPJ2