The sale of electric bulbs on different days of a week is depicted below: (1 $=2 BULBS)

Analyze the pictograph and answer the question:

How many cartons were needed in the given week, if one big carton could hold 9 bulbs?

Calculating the number of bulbs sold each day for a week. Using the table we can find the answers to the given questions.
Total number of bulbs = 12 + 16 + 8 + 10 + 14 + 8 + 18 = 86
1 carton can hold 9 bulbs then,
1 bulb can fit in cartons.
So 86 bulbs can fit in cartons.
Therefore 86 bulbs can fit in cartons.
Since we cannot have cartons in fractions, therefore we need 10 cartons. Therefore, option 1 is correct.