Hey there!
Assuming that

So, let's solve your function, shall we?

Good luck on your assignment and enjoy your day!
~
Answer:
He subtracted incorrectly
Step-by-step explanation:
You multiply 42.75 x 4 and get 171. Then you add 171+52.45=223.45 and then you subtract 223.45-18=205.45 and then you multiply 223.45 x .3333 = 68.3265 or 68.33 (rounded)
As 1 yard is equal to 3 feet , so 4 yard will be 12 feet !
so 13 foot > 4 yards
-2in = the equals sign has a slash through it 0