9% sales tax on a $150 purchase

150 * 0.09 = ?

It would be 12.89

To calculate the amount of sales tax on a $150 purchase with a 9% tax rate, you can follow these steps:

1. Convert the tax rate to decimal form:
9% = 9/100 = 0.09

2. Multiply the purchase amount by the tax rate:
$150 * 0.09 = $13.50

Therefore, the sales tax on a $150 purchase with a 9% tax rate would be $13.50.