Read the stanza from “Twelfth Song of Thunder.”

The voice that beautifies the land!
The voice above,
The voice of the thunder
Within the dark cloud
Again and again, it sounds,
The voice that beautifies the land.

How do the repeated words in this stanza affect the song?

The repeated words stress the connection between the singer and the listener.
The repeated words put the focus on the main idea of the stanza.
The repeated words explain how thunder comes into being.
The repeated words make it clear that these are the lyrics for a song.

Igot the answer, here you go dude. 

Their worse are not meaningful;

You this is right

You need to figure out at which x-value does the graph has a tangent line slope of -1.remember, the derivative is the slope of the tangent line. so find the derivative function and set it to equal -1 to find the x-value that will have a tangent line slope of 0.differentiate with the chain rule.    set the derivative to equal -1 and solve for x.      take log base 10 of both sides. also recall that  .    so the x-coord of the point of tangency is .the y-coordinate of this point of tangency can be calculated using the original function:     using point-slope form, the equation of the tangent line is      the x-intercept of this tangent line is when the graph is at y=0.    this rounds off to  .choice c.