How would you handle a situation where the teacher you are substituting for, did not leave lesson plans

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

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

Find the difference (8ab+a+2) - (3ab+6)