27. Five mark exercise problem V

You are downloading a song. The percent $y$ (in decimal form) of mega bytes remaining to get downloaded in $x$ seconds is given by $y = -0.1x + 1$, then:

 

(i) The graph of the equation.

 

[Note: This is a creative task. Your teacher will check manually.]

 

(ii) The total size of the song is Mb.

 

(iii) After how many seconds will $75\%$ of the song will be downloaded?  seconds.

 

(iv) After how many seconds will the song be downloaded completely?  seconds.