How did the native americans influence the western culture 15 century?

The thoughts and perspectives of indigenous individuals, especially those who lived during the 15th through 19th centuries, have survived in written form less often than is optimal for the historian. Because such documents are extremely rare, those interested in the Native American past also draw information from traditional arts, folk literature, folklore, archaeology, and other sources.

Native American history is made additionally complex by the diverse geographic and cultural backgrounds of the peoples involved. As one would expect, indigenous American farmers living in stratified societies, such as the Natchez, engaged with Europeans differently than did those who relied on hunting and gathering, such as the Apache. Likewise, Spanish conquistadors were engaged in a fundamentally different kind of colonial enterprise than were their counterparts from France or England.

your answer would be (b)

8 - (2a + 7) = a + 40     distribute/multiply - into (2a + 7)

8 - 2a - 7 = a + 40

1 - 2a = a + 40       add 2a on both sides

1 = 3a + 40         subtract 40 on both sides

-39 = 3a       divide 3 on both sides

-13 = a

[proof]

8 - (2a + 7) = a + 40

8 - (2(-13) + 7) = -13 + 40

8 - (-26 + 7) = 27

8 - (-19) = 27

8 + 19 = 27

27 = 27