matthewbringhurst04 matthewbringhurst04

23-05-2022
Mathematics

contestada

If f(x) = (1/9)(9*), what is f(3)? A. 729 B. 81 C.1/729 D.1/81

Respuesta :

mhanifa mhanifa

04-06-2022

Answer:

B. 81

Step-by-step explanation:

Note. It is assumed * is x in the function notation.

Given

Function f(x) = (1/9)(9ˣ)

Rewrite it as:

f(x) = 9⁻¹ 9ˣ = 9⁻¹⁺ˣ = 9ˣ⁻¹

Find f(3)

Substitute the value of x into equation:

f(3) = 9³⁻¹ = 9² = 81

Correct answer choice is B

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