The function f(x) = 40x + 8 represents the amount of money Makayla earns reupholstering furniture. The function g(x) = 3x − 4 represents her upfront costs. Find (f – g)(4) to determine how much profit she will make from four pieces of furniture.

$168
$21
$160
$8

Respuesta :

She will make $160 of profit from four pieces of furniture

Step-by-step explanation:

given functions are:

[tex]f(x) = 40x + 8\\g(x) = 3x-4[/tex]

we have to find (f-g)(x) first

So,

[tex](f-g)(x) = f(x)-g(x)\\=40x+8-(3x-4)\\=40x+8-3x+4\\=37x+12[/tex]

In order to determine the amount of profit, we have to put x=4 in the result.

So,

[tex](f-g)(4)=37(4)+12\\=148+12\\=160[/tex]

She will make $160 of profit from four pieces of furniture

Keywords: Functions, Operations

Learn more about functions at:

  • brainly.com/question/4054269
  • brainly.com/question/4163549

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Answer:

C is correct

Step-by-step explanation:

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