Where does the graph of x2 - x - 2 = y cross the x-axis?

a) (2, 0) and (-1, 0)
b) (0, 2) and (0, -1)
c) (1, 2) and (2, -1)
d) (-2, 0) and (-1, 0)

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

Is the square root of 4 plus the square root of 16 rational?

A50% increase followed by 33 1/2% decrease