Pls help! you don't have to do all of them (but if you can pls help me on all)
​

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

Which shows the graph of the solution set of 3y – 2x > –18?

Which expression is the factorization of x^2+10+21