Find f(-8) for f(x) = -3x + 21

Jawab:

Penjelasan dengan langkah-langkah:

soal

f(x)=  -3x + 21

f(-8) = – 3(-8) + 21

f(-8) = 24 + 21

f(-8) =  45

The value of f(-8) is: 45

Explanation:

Formula for the Function is:

f(x) = -3x + 21

Find the value of f(-8).

Solution:

f(x) = -3x + 21

To find f(-8), we substitute x from the formula by -8.

=> f(-8) = -3(-8) + 21

=> f(-8) = 24 + 21

=> f(-8) = 45

So, based on the function we get f(-8) is equal to 45.

Hopefully can help you:)

Details for Answer:

Subject: Mathematics

Class: 11

Category: Composite Functions and Invers

Code of Question: 2

Code of Categorization: 11.2

Keywords: Composition, Function, Union, f(x), Find the Value of.