Number 3 would be y=4x.
Number 5 would be 9 1/24 for the left side and 133/8 for the right side.
C I believe the -2 part that was the one just looked it up on google XD hope it helped
Answer:
5.19 for the roast beef & 2.39 for the cheese. 7.58$
10.00$-7.58$=3.42$
