Set up a proportion and use cross multiplication to solve. 100 is 250% of a0.

answer:

100/2.5 = x/1

100 = 2.5x

x = 40

step-by-step explanation:

through just a quick inspection, one can see that the graph of this cubing function starts in quadrant iii and ends in quadrant i.   when x = 0, y = 3, so the y-intercept is (0, 3).

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