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Discipline: Math

Question topic: Function: Domain

Source: Originais Teachy

Level of difficulty: Medium

(Originais Teachy 2023) - Question Medium of Math

An architect is designing a staircase and to calculate the height h of each step, he uses the function h(x) = -x² + 4x, where x represents the width of the step in centimeters. Considering that the width of a step must be at least 0 cm and at most 4 cm, what is the maximum domain of x for this function?
a.
[0, 4]
b.
[0, 2]
c.
(0, 4)
d.
[0, 8]
e.
(0, 4]

Answer:

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