Answer:
Number of minutes Denzel still has to practice after x days, N(x) = 210 - 30x
Step-by-step explanation:
Denzel must practice piano for 210 minutes each week.
Total practice needed = 210 minutes
Total minutes practicing per day = 30 minutes
Let x be the number of days practiced
Total minutes practices after n days = 30x
Total remaining minutes = 210 - 30x
Number of minutes Denzel still has to practice after x days, N(x) = 210 - 30x
