Reduce periodic inputs and sketch a complete finite window

It is given that

$f(x)=\begin{cases}7-x^2&\text{for }0<x\leq2,\\2x-1&\text{for }2<x\leq4\end{cases}$

and that $f(x)=f(x+4)$ for all real values of $x$.

(i) Evaluate $f(27)+f(45)$.2 marks

(ii) Sketch the graph of $y=f(x)$ for $-7\leq x\leq10$.3 marks