TWICE (Basic function example)

TWICE is a K-pop girl group that became successful with their career as idols. It was recently stated that they have sold a lot of their albums based from the charts. It was predicted that at least every album (including the mini albums, special albums and repackaging) released, there would be an increase of 105,000 sales. If the Mini albums would only be counted, there will be an 80,000 increase in sales (this excludes the special albums, repackaging, full album, Japan Albums, etc.). What is the total of their Mini Albums, if there are 5 of them and each time there was a release, there would be an increase?

TWICE’s Mini Albums	Sales
The Story Begins	157,000
PAGE TWO
TWICEcoaster LANE 1
SIGNAL
What Is Love?
	Total:

Solution:

Let “f” be the function name.

       a.) f(x) = x + 80,000 = Sales

f(157,000)= 157,000 + 80,000 = 237,000

       b.) f(x) = x + 80,000 = Sales

f(237,000)= 237,000 + 80,000 = 317,000

       c.) f(x) = x + 80,000 = Sales

f(317,000)= 317,000 + 80,000 = 397,000

       d.) f(x) = x + 80,000 = Sales

f(397,000)= 397,000 + 80,000 = 477,000

Total = 157,000 + 237,000 + 317,000 + 397,000 + 477,00

              = 1,585,000

TWICE’s Mini Albums	Sales
The Story Begins	157,000
PAGE TWO	237,000
TWICEcoaster LANE 1	317,000
SIGNAL	397,000
What Is Love?	477,000
	Total: 1,585,000