Zack likes to play video games, which cost $12 per hour to play. Zack's benefit from playing video games on any day is given by BZ(x) = 60x - x3 where x is hours of gaming. His utility function for money (m) is Uz(m)=m. a) How many hours will Zack choose to play video games tomorrow? b) What is his maximum attainable (optimal) utility?Zack likes to play video games, which cost $12 per hour to play. Zack's benefit from playing video games on any day is given by BZ(x) = 60x - x3 where x is hours of gaming. His utility function for money (m) is Uz(m)=m. a) How many hours will Zack choose to play video games tomorrow? b) What is his maximum attainable (optimal) utility