Consider the single$-$precision code SAXPY:

for $($i $=0$; i $<$ n; $++$i$)$ y$[$i$]=$ a$*$x$[$i$]+$y$[$i$]$

$(7$ Points$)$What is the Arithmetic Intensity of this code? Justify your answer.

$(8$ Points$)$ Assume this code runs on the computer modeled on Roofline Model Figure $6\mathrm{.}10\mathrm{.}2$ ZyBook $($or COD Figure $6\mathrm{.}18$ hardcopy textbook$).$ What is the attainable GFLOPs$/$sec$?$ Justify your answer.