Lindsay practice the guitar 50 minutes on Saturday and 30 minutes on most weekdays. Last week she practiced 150 minutes. How many weekdays did she practice? Write an equation in the form px+q=r to represent this problem
Let x be the number of weekdays Lindsay practiced.
She practiced for 50 + 30x minutes during the weekdays.
In total, Lindsay practiced for 150 minutes.
Therefore, the equation can be written as:
50 + 30x = 150. Answer: \boxed{2}.