What is the MAIN idea of the section “Getting Better All the Time" in the selection?
a The Constitution changes every year.
b The Constitution is a perfect document.
c The Constitution includes both good and bad news.
d The Constitution has been improved several times.

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".

d. hip hop

it was originated in the 70s while the harlem renaissance occured in the 1920s

cultural history is your answer

they were all fought in the middle east during ww1