Question Review Passage
A certain radioactive isotope decays according to the model
y(t) = yo e-6.0000 where y(t) represents the amount of the isotope
left after t years.
In approximately how many years will there be 92% of the
isotope left?

Damon makes 20 cups of lemonade by mixing lemon juice and water. the ratio of lemon juice to water is shown in the tape diagram. lemon juice\text{lemon juice} lemon juice water\text{water} water how much lemon juice did damon use in the lemonade? cups