Scientists give two different treatments to people who have the flu and determine if their health improves. The results for the experiment are in the two-way table.

1. What percentage of people receiving treatment 1 had improved health?
2. What percentage of people receiving treatment 2 had improved health?

A group of people are surveyed about whether they enjoy dancing or not and whether they listen to music while doing chores or not.

Which value could go in the blank cell so that the percentage of people who do not listen to music while doing chores and do not enjoy dancing is 37.5%?

Many adults are selected at random to respond to a survey about their favorite season and whether they have allergies or not. The two-way table summarizes the results from the survey.

1. Which season is the least popular in this group?
2. How many more people in this group have allergies than do not have allergies?
3. How many people were surveyed in this group?

A random sample of people are asked about their preferences regarding home decoration and their interest in fashion. Complete the two-way table so it has the characteristics listed.

• 150 people responded to the survey.
• 70% of the responders do not pay attention to fashion.
• 33 of the responders who prefer neutral decorations also do not pay attention to fashion.
• 20 of the responders who pay attention to fashion also prefer colorful decorations in their homes.

Write an equation whose graph is a line perpendicular to the graph of \(x=\text-7\) and which passes through the point \((\text-7,1)\).