Plz me with this i need it right now

How are farmers that use no plow farming methods able to improve air quality for the people around the fram

Combine like terms. do not forget to use the distributive property to simplify the first term. 2(3y + 5k) - 2k

How have ethnic groups shaped the population in central america and the caribbean? how has migration shaped the population in central america and the caribbean? how has small land areas shaped population in central america and the caribbean? how has a rapid population growth shaped the population in central america and the caribbean?