Answer:
Descriptive research
Explanation:
If our goal is to estimate the prevalence of a disease or exposure in a population, we are talking about descriptive research. Whenever we are trying to describe the characteristics of a population or a phenomenon (in this case the frequency of a disease and exposure to it) we are doing a descriptive study. The results of this type of studies are usually represented in descriptive statistics and percentages. For example, from this sort of survey we would find out the percentage of population that suffer this disease.
Is there a picture to go with this question?
Answer:
The tip would be $6.36
Explanation:
If the bill was $42.40, and you wanted to leave 15% tip
0.15 is the same as 15% and you multiple it by the amount to get your tip