Only 25 and 28 are functions.
A function must have only one y value per x value. For 26, the y value of 0 and multiple others have two different y values. For 27, all x values less than 0 have multiple y values.
Answer: 2cm
Step-by-step explanation:
That means you are multipliying 10,000,000 by 280,509,031...
I don't know what number 1 and number 2 mean,
3:11
4
5:-3
6:-8
You can find the answer below. Among the questions I answered correctly, I hope to adopt it at the end. Thank you. Have a nice day.

Multiply the square root of 3 by the square root of 2 and itself.
The 3 cancels itself out and then you get A