Rewrite the sentence to express how rapidly, on average, the quantity changed over the given interval. $($Round all numerical values to two decimal places.$)$

During a media event at which CEO Steve Jobs spoke, Apple shares opened at $$156\mathrm{.}86$ and dropped to $$151\mathrm{.}80$ fifty minutes into Jobs's keynote address. $$

During a media event at which Steve Jobs spoke, Apple shares dropped $$ by an average of $$-0\mathrm{.}092$ per $.$

Need Help?