The answer A. Census
Census is a survey of <em>every member of a given population</em>. This means that the respondents include all members of the group that you want to study. For example, you want to do a study on the preferred restaurant of the students of a particular school. If you will do a census, you need to get the response of each student in that school.
I can’t really see the equation, what’s the equation? You can only see the bottom of it
The answer would be the algebraic expression, b + 9. The
translation here is b is representing the number of blue bikes then you needed
to add the 9 which represents the 9 red bikes. The two is added together, to get
the total of those red and blue bikes which we are looking for.
Answer:
Equal the gradient of the given points & of some arbitrary point
Step-by-step explanation:
The gradient of the line = 
Select some arbitrary point
on that line and rewrite the relationship for the gradient with either point (given) and then equal it to what we just calculated.

The answer is x=1. I showed my work in the screenshot provided