Answer: Yes.
Step-by-step explanation: Each point on the graph has a different X-Value. It's ok for the Y-Values to repeat.
30% is a way to express the fraction 30/100 = 3/10
So, 30% of 80 is

This is an example of "a stratified sample".
<u>Answer:</u> Option B
<u>Explanation:</u>
A group-based sampling process that can be divided into subpopulations. For statistical studies, testing of each subpopulation separately may be useful if subpopulations within a total population differ, thus understood as "Stratified sampling".
One might, for instance, divide a adults sample into subgroups in terms of age, like 18 to 29, 30 to 39, 40 to 49, 50–59 etc with decided age difference as needed. A stratified sample may be more accurate than an easy sample of the similar size by random. As it offers more accuracy, a stratified sample sometimes involves a smaller sample, saving money.
Answer:
5 hours 30 minutes
Step-by-step explanation:
347.50-100 (initial fee)=247.50. 247.50/45= 5.5 hours
32.5 is the correct answer