Question

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Answer 1

I think it makes it more easier if you simplify the inequality.

4x + 20 < 40        First subtract 20 on both sides

4x + 20 - 20 < 40 - 20

4x < 20     DIvide 4 on both sides to get the variable "x" by itself

x < 5    [x is less than 5, so x represents the numbers that are less than 5]

[Note:

If the sign is < or >, you use an open circle.

If the sign is ≤ or ≥, you use a closed circle.]

Your answer is the 1st option because the solution is any number that is less than 5