Answer:
Option D) B and C
Step-by-step explanation:
we know that
To find out the percentage of high school teachers that have a second job, divide the number of teachers that have a second job by the total number of teachers
<em>Survey A</em>

Convert to percentage

<em>Survey B</em>

Convert to percentage

<em>Survey C</em>

Convert to percentage

<em>Survey D</em>

Convert to percentage

Compare the percentages
Surveys B and C have the same percentage
therefore
Surveys B and C show proportional results, because the ratio of the number of teachers that have a second job by the total number of teachers is equal (this number is the constant of proportionality k in a proportional relationship between two variables)
Answers: [E] and [F] .
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[E]: 8²ˣ ;
Note: (8²)ˣ = 8²ˣ ; (8²)ˣ = (64)ˣ ;
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5 is a prime factor of 155. Dividing 155 by 5, we get 31. 1*5*31 = 155.