Given f ( x ) = 3 x + 3 find f(15).

Let f ( x ) = 3 x + 3 ∴ f ( 15 ) = 3 ( 15 ) + 3 put x = 15 ∴ f ( 15 ) = 45 + 3 ∴ f ( 15 ) = 48 ∴ f ( 15 ) = 16 × 3 ∴ f ( 15 ) = ± 4 3

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tamolam8

2022-09-08

Given

f (x) = \sqrt{3 x + 3}

find f(15).

ignaciopastorp6

Beginner2022-09-09Added 14 answers

Let

f (x) = \sqrt{3 x + 3} ∴ f (15) = \sqrt{3 (15) + 3} put x = 15 ∴ f (15) = \sqrt{45 + 3} ∴ f (15) = \sqrt{48} ∴ f (15) = \sqrt{16 \times 3} ∴ f (15) = \pm 4 \sqrt{3}

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