Answer:
Step-by-step explanation:
Let cd price x; dvd price y
3x+y=20
2x+2y= 22
from the first equation, y= 20-3x
substitute y in the second equation, 2x+2(20-3x)= 22, simplify -4x= -18, x= 4.5 and y= 6
Therefore, cd: $4.50 and dvd: $6.50
Kate: 6x+2y=56
Jake: 3x+3y=48
Please refer to the attachment
b, but I'm not sure. this could very easily be incorrect. you may need to look this up on google first.
