Mathematics for IGCSE & O level - Functions (Section 4 - No. 27)

If f(x) = x^2 + 3 and the domain is {0, 1, 1.5}, what is f(1.5)?

5.25

5.5

5.0

5.75

Explication

f(1.5) = (1.5)^2 + 3 = 2.25 + 3 = 5.25.

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