The combined practice time for last and this week is : 2(r + 10)
Using the parameters given :
- Time each week = r
- Time last week = 2r
- Time this week = 20 minutes
Expression for the combined minutes :
- Time last week + Time this week
Now we have :
Combined time = 20 + 2r
Factorize;
2(r + 10)
Hence, the combined practice time for last and this week is : 2(r + 10)
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.