Answer:
A and D
Step-by-step explanation:
I just did the test
It would be the fourth option - <span>The survey could be biased because people exiting an Italian restaurant might favor Italian food.
The survey is clearly biased because Sonya is selecting </span>a sample that isn't representative of the entire population. Surveying every tenth person exiting the restaurant isn't a problem since it's a type of <span>systematic sampling.</span>
It will take Mallory 40 minutes to get to the airport by train.
Step-by-step explanation:
Given,
Time taken by car = 120 minutes
Time taken by train = t
According to given statement;
Time taken by car = 3 times time taken by train
Dividing both sides by 3
It will take Mallory 40 minutes to get to the airport by train.
Keywords: division, multiplication
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7x+9
5x+2x= 7x
5+4=9
7x + 9 is the result when combining like terms.