Question

How do you do this and what is the answer?

Answer 1

a)
`f(-4) = 19`

b)
`f(0) = 3`

Explanation:

When working with these type of problems, they give you a function, which in this case is
`f(x)`, and they give you what that function is equal to, it's value, which in this case is
`x^(2) + 3`.

• When working with letter a), the function is
  `f(-4)`, meaning all the variables in the expression will be -4.

• When working with letter b), the function is
  `f(0)`, meaning all the variables in the expression will be 0.

First let's work with letter a), (-4).

`f(x) = x^(2) + 3`

`f(-4) = -4^(2) + 3`

`f(-4) = 16 + 3`

`f(-4) = 19`

Let's now work with letter b), (0).

`f(x) = x^(2) + 3`

`f(0) = 0^(2) + 3`

`f(0) = 0 + 3`

`f(0) = 3`

Hope it helped,

BiologiaMagister

Answer 2

a.) 19

b.) 3

Explanation:

a.)

f(x) = x² + 3, f(-4)

f(-4) = (-4)² + 3

f(-4) = 16 + 3

f(-4) = 19

b.)

f(x) = x² + 3, f(0)

f(0) = (0)² + 3

f(0) = 0 + 3

f(0) = 3

Thus, f(-4) = 19 and f(0) = 3

-TheUnknownScientist