Please help :(( i will mark brainliest

See explanation

Step-by-step explanation:

x <= 3.9 means that x is less than or equal to 3.9

So lets look at each value:

x = 4.1      4.1 is not less than or equal to 3.9, so x = 4.1 is not a part of the solution set

x = -3.9       -3.9 is less than or equal to 3.9, so x = -3.9 is a part of the solution set

x = 3.9          3.9 is equal to 3.9, so x = 3.9 is a part of the solution set

x = 4            4 is not less than or equal to 3.9, so x= 4 is not a part of the solution set

x = 4.3            4.3 is not less than or equal to 3.9, so x= 4.3 is not a part of the solution set

x = 3.8            3.8 is less than 3.9, so x = 3.8 is a part of the solution set

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