Answer:
B I aplogize if its wrong i haven't done this type of math in a couple years so its foggy
Hope it Helps!
<span>y + 4 ≤ 0
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Subtract 4 from each side
</span><span>y + 4 - 4 ≤ 0 - 4
</span>y ≤ -4
y ≤ -4 is the answer
Incomplete question. However, I answered from a general research perspective.
<u>Explanation:</u>
Note, the term <u>sample </u>used in statistical research refers to subjects or persons carefully selected (using a particular sampling method/type ) to represent the target population.
A randomly selected sample could be done as either:
- Simple Random Sampling
- Stratified Random Sampling
- Cluster Random Sampling.
- Systematic Random Sampling.
<u>Using any of the above sampling methods could result in 70% of the population being from low-income families as this is a matter of chance. Hence, we can agree with the research results.</u>