Evaulate the following expression: 6 to the 2nd power - 7(8 + 6 - 3 to the 2nd power)

What point is the author trying to make by comparing the travel times of the first transcontinental railroad and the first transcontinental flight?

It's to know your purpose before you read something because a purpose can:

Ead this excerpt from the introduction to wheels of change by sue macy. imagine a population imprisoned by their very clothing; the stiff corsets, heavy skirts, and voluminous petticoats that made it difficult to take a deep breath, let alone exercise. add to that the laws and social conventions that cemented a man's place as head of the household and holder of the purse strings. how suffocated women must have felt. and how liberated they must have been as they pedaled their wheels toward new horizons. why does the author include this excerpt?