The answer is 34.3 minutes
Step-by-step explanation
To round off to the nearest tenths, you need to find first the tenths value. In this case, it's 2.
Next, look to the number on the right side or the hundredths value. Since 8 is greater than 5, you have to round the tenths value up.
From 2, you'll now have 3. Zero out the values on the right of the tenths value.
So basically, you'll have now 34.3 minutes