Hello i don’t get this, i don’t want the answer i just need someone to teach it to me because it wasn’t in the lesson

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Step-by-step explanation:

Hopefully this will help. Let me know in the comments if it doesn't.

The domain is all the x's where the function exists. The function you have starts at x=3 and ends at x=7. There are no breaks in your line between those numbers for x. So your domain is all x's between 3 and 7 ( inclusive).

So that means all values of x that is greater than or equal to 3 and values of x less than or equal to 7.

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kekdkdkccc

so

step-by-step explanation:

kekdkckcldlx

the answer is 21%.