Does anyone know how to do this?

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

One positive number is 9 more than twice another. if their product is 95, find the numbers

What is the value of f(x) = 2.2 for f(-2)?