The doughnut shop is having a special on doughnuts. The first dozen is $3.60, and each additional dozen is $1.00 off.
The breakfast club paid $21.80. How many dozen doughnuts did the club buy?
BE SURE TO USE EQUATIONS FOR THIS PROBLEM.
We know they must have bought 1 dozen at $3.60 and x dozen at $2.60
so 2.6x + 3.6 = 21.8
solve for x