Answer:
35
Step-by-step explanation:
3x=28
x=7
no.of total students=35
First: 4/10 aka 2/5
Second: 3/9 aka 1/3
Multiplying,
Adding or subtracting,
2
f(-2) = 2(-2)^2 +3(-2)
f(-2)=2
where ever you see x you put -2 there
i hope this helps
-3x - 21 + 2x -4
-x - 25
-(x + 25)