(a) Put the linear expression $3 - 6 (x + 3) + 8 (9 x + 6)$ in the form $m x + b$.

help (formulas)

(b) Give the constant term and the coefficient of $x$ in the linear expression $3 - 6 (x + 3) + 8 (9 x + 6)$.

The constant term is help (numbers)
The coefficient of $x$ is help (numbers)