An unknown number x is at most 20. Which graph best represents all the values of x?

Number line graph with closed circle on 20 and shading to the right.
Number line graph with open circle on 20 and shading to the right
Number line graph with closed circle on 20 and shading to the left.
Number line graph with open circle on 20 and shading to the left

Respuesta :

closed to the left ............
The correct answer is:
Number line graph with closed circle on 20 and shading to the left.

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A closed circle means "less than or equal to." To the left means less so this entire answer means "less than or equal to 20."