Answer: 4 Mylar, 12 Regular
Step-by-step:
Well, let’s start looking at the possible options.
(M=Mylar, R=Regular)
0M, 16R, $5.60
1M, 15R, $7.70
2M, 14R, $9.80
3M, 13R, $11.90
4M, 12R, $14.00
Wait, we found it! There should be four mylar balloons and twelve regular balloons to make 16-balloon bouquet that costs $14.00.