# math

posted by
**Tiffany** on
.

An investor purchases 75 shares at 37.90 a share, holds the stock for 150 days, and then sells the stock for 41.20 a share. Find the annual interest rate earned.

principal

under 3000

3000-10,000

over 10,000

commission

32+1.8% of principal

56+1% of principal

106+0.5% of principal