The amount of breakfast bill = $ 7.12
Regina has a discount coupon of = 20%
So, the amount taken off of the bill will be = 20% of 7.12
=
= 1.424
Hence, Regina will get a discount of $ 1.424 or in other words $ 1.424 will be taken off the bill.
To calculate the amount paid after discount will be = 7.12-1.424 = $ 5.696