Answer:
Hence Domain set for function is {0,1,2,3,4}
Step-by-step explanation:
Given:
Total amount spend =90
22.5 $ each game cost
To Find:
What is domain for the function
Solution:
Now domain mean all possible value for input so that it gives real output as per condition mentioned
So Our condition is that li spends money on video game depends on how many game he purchases
so total money spent on game is output
i.e in order to get that much amount of games.
If he spends 22.5 $ for each game and Total amount spent is 90
So 90/22.5=4 Now amount of game he would purchase will be 4
i.e range for lil is 0 to 4 wiht 90 $ in hand
So Domain set will be ranging from{0,1,2,3,4}
. Then 
, d. 8 m