Question

Can you please help me olve theses

Answer 1

`f(x) = 0 \text{ when } x = \bold{1}`

`f(-7) =\bold{224}`

Explanation:

Solving for the input,
`\bold{x}`, given the output:

Given:

`f(x) = 4x -4`

Solving for
`x` from the equation,
`f(x) = 0`:

`f(x) = 0 \\ 4x -4 = 0 \\ 4x = 4 \\ x = (4)/(4) \\ x = 1`

Solving for the output,
`\bold{f(x)}`, given the input.

Given:

`f(x) = 4x^2 -4x`

Solving
`f(-7)`:

`f(-7) = 4(-7)^2 -4(-7) \\ f(-7) = 4(49) -4(-7) \\ f(-7) = 196 +28 \\ f(-7) = 224`