Question

The functions r and s are defined as follows.

r(x) = 2x+1
s(x) = -x²
Find the value of r (s (4)).
r(s(4))=

Answer 1

`33`

Explanation:

Define functions:

`r(x) = 2x+1\\s(x) = -x^2`

Substitute
`s(x)` into
`r(x)`:

`2(-x^2) + 1`

Solve for value:

`= 2((-4)^2)+1\\= 2(16) + 1\\= 32 + 1\\= 33`

** assuming that the function of
`s(x)` the x value is squared with the negative sign.