Em saves at least 20% of what she earned for each week. is she earns $140 each week for 4 weeks wich inequality describes the total amount she saves

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

The system of equations graphed below has how many solutions? y = 2x + 2

What is the total surface area of this square pyramid?