Angle x is supplementary to the angle with 156 degrees. What this means is that the sum of the two angles is 180 degrees. With this knowledge you can make a formula like so...
156 + x = 180
Now you can solve for x by subtracting 156 to both sides
About 7
8 dozen=96 bagels (12 bagels per dozen) divide by 14 for thats how many fit on a plate which equals 6.857142857 round to the nearest whole number