Answer:
For Number 1, the answer is 25.
Number 2 is Natsuki from DDLC.
Explanation:
If x = 5, that means we replace x with 5, which gives us 5 times 5. 5 times 5 equals 25.
The girl's name that is in the picture is Natsuki. She is from a game called Doki Doki Literature Club and she is one of the characters in the game. She is recognizable by her hairstyle, hair color and expressions.