What has many keys but cant open a single lock? ?

1× 10×10×10+2×30×30=[tex]1 \times 10(4) + 2 \times 10(3) = \\ [/tex]

For the difference command to work, what needs to happen?

A. what should the time signature be for the b. every note in this example is (write the letter name.) c. circle all eighth notes. d. how many beats does the rest in the first measure get? e. give the example a final barline. bonus: include a dynamic marking of your choice.