Among the choices, option B. Hasn't, is a singular contraction. "Hasn't" is the shortened word for "has not". The rest of the choices are plural contractions: Don't from do not, Haven't from have not, and Weren't from were not.
The gift with tax is $17.55
8% as a decimal equals 0.08
To find out how much the tax is, you multiply 17.55 by 0.08
(17.55)(0.08)=1.40
Then, you subtract 1.40 from 17.55 to get the price of the gift before the tax was added.
$17.55-$1.40=$16.14
