Answer:
$27.99 interest.
Explanation:
Use the formula for Compound interest = P(1 + r/n)^t . Here n = 365 (number of days in a year), r = annual rate as a decimal and t = the number of days, P = 8000.
Amount after 15 days = 8,000(1 + 0.085/365)^15
= $8027.99.