#### Answer

Correct answer:
$x=0.005*1300=\$6.50$

#### Work Step by Step

First, we solve the problem the correct way. To find $\frac{1}{2}\%$ of $\$1300$, we set up a proportion:
$\frac{0.5}{100}=\frac{x}{1300}$
$x=0.005*1300=\$6.50$
The other classmates used a wrong decimal value for the percent:
$x=0.0005*1300=\$0.65$ (WRONG)
$x=0.05*1300=\$65$ (WRONG)
$x=0.5*1300=\$650$ (WRONG)
Thus it's important to convert percents to decimals properly.