Answer:
B. People who were promised free samples of Penelope‘s puffy popcorn for completing the survey
Step-by-step explanation:
This would show likely bias in the result of the survey
Answer: 
Step-by-step explanation:
Point-slope formula: 
Plug in the numbers: 
Clear the double negatives: 
They can not, there are only 2 sides and they probably flipped it different ways. They got 'lucky'.
Answer:
69,78!!
Step-by-step explanation:
Espero te sirva