The correct answer would be vision test. This is the variable of interest if you are studying the effects of UV rays on eyesight and you group 10 people together and make them wear sunglasses for 10 weeks and see if their eye sight is affected and then take another group and do not give them sunglasses and test their vision after 10 weeks.
Answer:
9
Step-by-step explanation:
f(3) means what is the value of f(x) when x = 3
From the table
f(3) = 9
Answer:
hear is your answer in attachment