Answer:
f(2) = -2
Step-by-step explanation:
To solve this, you have to plug in 2 for x
f(2) = -2^2 + 2(2) - 10
= 4 + 4 - 10
= 8 - 10
= -2
If you mean

you can first substitute
to get

and so

I am not sure what the question is asking I am sorry could you please be more specific ?
Answer:
15 students
Step-by-step explanation:
The fraction of students who will repeat the exam is:

=
simplified is:

Extract this fraction of 45:

Hope this helps
A. 48 is the answer because 8x6