Oshawa digital solutions manufactures and distributes video games. The weekly sales of their recent video game are expected to decline games per week, where is time in weeks and () is the number of games sold each week.

() = 30 ^3/2

Given the weekly sales now ( = 0) is 3000 video games, (a) Compute (). (b) When does the weekly sales reach 1000 video games per week?