Answer:
B, C, E
Step-by-step
B) 3 package of mechanical pencil =$15.78
2 packages of rollerball pens =$12.98
Total= 28.76
C) 2 sketch pads= 15.78
2 packages of colored pencil= 13.98
Total= 29.76
E) 2 packages of colored pencils= 13.98
2 packages of rollerball pens = 12.98
Total= 26.96
All fall under the rpice of $30 dollars.