x·1/2·7/8·6/7·1/2 = 12 --> x = 64 Stickers
-4.75= z/2
Multiply both sides by 2
-4.75(2)= z/2(2)
Cross out 2 and 2, divide by 1 and becomes z
z=-9.5
Answer: z= -9.5
i think the answer is C