Answer:

Step-by-step explanation:
By the definition of a log, 
Answer:
cost = 1.35n
$33.75 for 25 songs
Step-by-step explanation:
Based on the numbers given, the cost is proportional to the number of songs downloaded. The constant of proportionality is the cost of one song: 1.35.
cost = 1.35n
For 25 songs, ...
cost = 1.35·25 = 33.75 . . . . dollars
__
The equation is ...
cost = 1.35n
..................(1x+14y)4
112
/ \
2 56
/ \
4 14
/ \ / \
2 2 2 7
54
/ \
2 27
/ \
3 9
/ \
3 3
GCF=2
Its a guess and check problem you have to just try to find a combonation of 8 and 10 to get 200