just numbers C-E-F
plsssss it’s really important appreciate if you’d answer thx

Answer:
C) 2z^2 + 2z - z = 2z^2 + z
E) (-30j) / (-6) = 30j / 6 = 5j
F) 23a^3*22a^5 = 23*25a^8 = 506a^8
Step-by-step explanation: