Miako has just applied for a credit card that offers a 1.9 percent interest rate for 12 months. At the end of 12 months, the interest rate will be "prime plus 9 percent." Which of the following characteristics does this card have?
Both variable interest rates and teaser rates

Both variable interest rates and teaser rates

Explanation:

Miako has just applied for a credit card that offers a 1.9 percent interest rate for 12 months. At the end of 12 months, the interest rate will be "prime plus 9 percent." The card have both variable interest rates and teaser rates.

what is the tax base for the sales tax?

it should be (usually ) 6%