The expression that shows how many minutes Vince practiced playing his guitar last week and this week combined is (2r + 20).
Let's denote the goal Vince set for practicing his guitar as (r) minutes.
Last week, he practiced for twice as many minutes as his goal, so the practice time last week is (2r) minutes.
This week, he practiced for 20 minutes.
To find the expression for the total practice time, we add the practice times from last week and this week:
Total practice time = 2r + 20
So, the expression that shows how many minutes Vince practiced playing his guitar last week and this week combined is (2r + 20).
Complete Question:
Vince set a goal to practice playing his guitar for r minutes each week. Last week, he practiced his guitar for twice as many minutes as his goal! This week, he was only able to practice his guitar for 20 minutes. Write an expression that shows how many minutes Vince practiced playing his guitar last week and this week combined.