In rehearsal, you notice that the performers seem to be out of key when using the Example 1 score. In what key is the Example 1 score? In what key should the musicians be playing based on the Concerto score?

My answer is (the objects in them are depicted in the center in order to create variety

If the measure is suppose to have six beats and we need 1 note and 1 rest, we can either do a whole note with a half note rest after that since a whole note equals 4 beats and a half note rest equals 2 beats or we could do a whole note rest with a half note after that since a whole note rest is 4 beats and a half note is 2 beats