Question

the functions r and s are defined as follows.
r(x) = 2x - 1
s(x) = 2x² + 2
find the value of r(s(-1))
r(s(-1)) =

Explanation:

Step1: Calculate $s(-1)$

Substitute $x=-1$ into $s(x)$:
$s(-1)=2(-1)^2 + 2 = 2(1)+2=4$

Step2: Calculate $r(s(-1))$

Substitute $x=4$ into $r(x)$:
$r(4)=-2(4)-1=-8-1=-9$

Answer:

$-9$