Answer:
50%
Step-by-step explanation:
$3 - $2= $1
$1/$2x100%=-50%
$52
3 books → $13
1 book → $13/3
12 books → $13/3 x 12 = $52
3.8
3(-7.9)-5(-5.5)
Hope this helps!
the M is (2,5)