The Constitution's opening statement, which explains its purpose is known as the

The Preamble to the United States Constitution, beginning with the words We the People, is a brief introductory statement of the Constitution's fundamental purposes and guiding principles. :-)

currancy

explanation:

the amount of the purse is, $120.

tax rate =9%

first find the the total tax she paid on the amount is equal to the 9% of $120 i.e,

now,

total amount paid by shalika = $120 +$10.8 = $130.8