What is 5 7/9 rounded to the nearest whole number?

Asilkworm winds its cocoon out of one long silk fiber. to make silk thread, 3 to 10 of these silk fibers are unwound from their cocoons and combined into aa single thread with a typical length of 300 yards. choose a reasonable number of silk fibers in a thread write an equation to find the total length of the silk fibersused in 300 yards of the thread

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Anyone know? will mark brainliest if correct