28 lawns
8 lawns divided by 14hours = 0.5714 lawns per hour
0.5714 lawns per hour times 49hours = 28
The correct answer is B indeed. It is an example of plain folks because the speaker appeals to the citizens of his town, and to the knowledge that he shares with the other members of the community. This strategy is quite basic, as shown by this example, because the author makes a claim that most people would agree with, without actually providing evidence or a series of logical arguments.
Here are the answers to the given sentences above:-No one answered the ad but me. It is used as PREPOSITION.-There is but one choice to make in this case. It is used as an ADVERB.-Sadie said she would go but she had to bring her sister. It is used as a CONJUNCTION
B “there,” he said. “There is something for you.”