Answer :
Answer:
9 days
Step-by-step explanation:
Y= minutes practiced
X= days
Mario practiced 40 minutes So Y= 40
40= 85-5x
40(-85)=85 (-85) -5x
-45=-5x
-45/(-5)= -5x/(-5)
9=x
Answer:
9 days
Step-by-step explanation:
Y= minutes practiced
X= days
Mario practiced 40 minutes So Y= 40
40= 85-5x
40(-85)=85 (-85) -5x
-45=-5x
-45/(-5)= -5x/(-5)
9=x