Today renee purchased a new mp3 player, and she uploaded 1 song onto it. tomorrow she plans to add 1 more song, and every day thereafter, she plans to add 1 new song per day. if renee’s mp3 player plays her songs in random order, which recursive formula will produce the sequence that represents the number of possible orders of the songs each day, starting with today?
a) t1 = 1, tn = n – tn – 1, where n ∈n and n > 1
b) t1 = 1, tn = n + tn – 1, where n ∈n and n > 1
c) t1 = 1, tn = n × tn, where n ∈n and n > 1
d) t1 = 1, tn = n × tn – 1, where n ∈n and n > 1

the answer is really D...

Step-by-step explanation:

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you

the answer is c

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