The US government supported westward expansion. It envisioned a nation that covered a vast expanse of land from the East Coast to the Ocean. The acquisition of Texas, the Oregon Territory, and the between 1845 and 1853 helped make this vision a reality. Most of this expansion happened during the presidential term of 1. Indian
2. Pacific
3. Atlantic

1. East
2. Southwest
3. Northeast

1. Sam Houston
2. James Polk
3. Stephen Austin

The first one is Pacific.

The second one is Northeast.

The third one is James Polk.

Explanation:

part a. there were 250 teenagers surveyed (100% of tenagers = 250)therefore 1 % = 250/100 = 2.5 76% = 1% x 76 = 2.5 x 76 = 190 teenagers of the 250 surveyed liked burgerspart b: jane surveyed 25% (which is equal to 50 teenagers, i.e. a quarter of the teenagers surveyed is 50) to get 100% we simply get 4 quarters, i.e. multiply 50 by 4 = 200 teenagers were surveyed by jane. part c: it is impossible to give an example where a percentage is greater than 100%, since, by definition , percentage means "per 100".