When a song is sold by an online music store, the store takes some of the money, and the singer gets the rest. The graph show how much money a singer makes given the total amount of money in sales. graph1

A) Find k.

B) Write the equation.

C) How much money did the song make in sales if the singer made $800?

D) What is the unit rate for this song?

Question 6 options:

Me with this assignment ! i only partially understand, so explain. also it's a work sample. at the championship bike race, steve and paula were fighting for first place. steve was 175 feet ahead of paula and had only 300 feet left to go. he was very tired and was going only 9 feet per second. paula was desperate to catch up and was going 15 feet per second. who won the bike race and by how far did she/he win?