This is easy it is equal
-2s^3+4s^2-4
----------------------
S^2

You don't multiply both of them, it's a coordinate function. There's suppose to be a comma in between
2) Inserting zeros at the right end of a decimal does not change its value
0.3 = 0.3000
4) To estimate the difference between 0.31 and 0.108, subtract 0.3.
22) 75.285 + 2 + 3.871 + 0.5 = 81.656
42) 0.01 - 0.0001 = 0.0099
50) 9 - 4.63 = 4.37
F(3)= 2(3)^2-5(3)+9
=2(9)-15+9
=18-15+9
=3+9
=12
f(3)=12 or B