If she wants to only use 85 a month then doing the math it would be 85-65=20 divided by 5 equals 4 so she would get 4 gigabytes while staying within her budget :)
Brainiest please
I would solve for y on the top one and sub it into the bottom one.
y=-2x+8
(12/5, 16/5)
Answer : 732-n
732= total n=partial
n+x=732
732-n=x