checks the power in a limited monarchy

The President

Explanation:

It is his duty to do that.

In this case Trump has to...

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.

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