Question

Find the first three iterates

Answer 1

to find first iterate substitute x for -8
\[\huge\rm x_0 =-8 \]
\[\huge\rm f(\color{reD}{-8})=-3\color{ReD}{x}-7\]
substitute x for -8
then to find 2nd interaate substitute x for f(-8)

Answer 2

so basically you have to find \[\huge\rm f(x_0) ,f(x_1) ,f(x_2)\]