If f(x)=x^2-1 and g(x)=x+2 then g(f(x)=

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

Do more republicans (group a) than democrats (group b) favor a bill to make it easier for someone to own a firearm? two hundred republicans and two hundred democrats were asked if they favored a bill that made it easier for someone to own a firearm. how would we write the alternative hypothesis?

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'