a. 8 (floor division)
b. 14 (PEMDAS)
c. 4 (Remainder of division)
d. -2 (PEMDAS - Modulus comes before subtraction )
e. 4.5 (floating point division)
f. 25.5 (PEMDAS- Division comes first here)
I didn't understand the last question. I hope you look all of this up if you plan on getting good grades.
PEMDAS is also sometimes taught as BODMAS in some schools.