All you have to do is add the decimals, and convert the fractions into decimals so that you can add them.
0.92 + 1.479 + 2.2 = 4.599
1/2 = .5, and 5/6 = .833
4.599 + .5 + .833 = 5.932
The answer is 5.932, but since the question says to 'estimate' the answer, you can round the answer to 6.
Therefore, the answer is B) 6 yards.
