For this part, you will find it helpful to use a Venn diagram. You may submit a Venn diagramorthoroughly explain how you reached each answer.

In a math 105 class of 34 students, a survey showed that 20 students used the ALEKS e-text at least once, 7 used a video at least once, and 5 used both the e-text and a video at least once.

1. How many students used only the e-text?

1. How many students used neither the e-text nor the videos at least once?