Clark's English students learned 30 vocabulary words. Each week, students tend to forget 10% of the vocabulary words they learned. How many of those words will they still remember in 4 weeks? (ROUND TO THE NEAREST WHOLE NUMBER) Do the following for the situation above:

Define the variables x and y.
State the Initial Value.
Is this situation Growth or Decay?
State the Growth/Decay Factor.
Write the equation that models the situation.
Determine how many vocabulary words the average student will remember in 4 weeks (ROUND to the nearest whole number).
BE SURE AND USE THE EQUATION EDITOR WHEN APPROPRIATE SUCH AS WRITING THE EQUATION