The answer is 10 because 5 10 15 20 25 30 35 40 45 50
198 round to the nearest hundreds is 200
198 round to the nearest tens is 200 too
Answer: 
Step by step:
This is the simplest form of this radical.
Answer: b. histogram
Step-by-step explanation:
A histogram is a graphical summary of data previously summarized in a frequency distribution. It is an accurate representation of the distribution of numerical data, the height of each bar shows how many fall into each range(the frequency of each range). Data from a frequency distribution table can be easily summarised graphically on a histogram.
An example of histogram is shown in the attachment