Answer:
51.
Step-by-step explanation:
The mode is the value which occurs most.
Ifwe look at the right side we see that the number occurring the most is 1:
'111'.
This is 51.
The total cost is given by
2.5x + 0.5f, where x represents the amount of excellent-condition paperbacks and f is is the amount of fair-condition paperbacks.
10, because when you add 5 and 7 then subtract 10 it equals 2