2. The unwritten constitution is best defined as the
(1) amendments to the United States Constitution
(2) powers that the Constitution reserves for the
states
(3) powers that the Constitution denies to
Congress and to the states
(4) practices of the government that are based on
custom and tradition

answer:

On what grounds would strict constructionists of the United States Constitution have questioned the purchase of the Louisiana Territory? It violated the guarantee of states' rights. Congress was opposed to expansion west of the Mississippi River. The president was not specifically given the power to purchase new land.

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".