Answer:
TREBLE CLEF
Measure 1, beat 1: A
Measure 2, beat 1: C sharp (C#)
Measure 3, beat 1: B
BASS CLEF
A, E, C# (C sharp), E, A, E, C# (C sharp), E
ACCIDENTAL: D Sharp, makes the note a half step higher
Step-by-step explanation:
TREBLE CLEF
For measure one, beat one there is a dotted half note, which means it has 3 beats. This note is A because the first space is F# (because of the key signature) and the second is two notes after. You get A if you say a note two whole steps higher than F.
For measure 2, beat 1 the note seems like it should be a C, however, if you look in the key signature the scale there is a sharp next to C, so the note is C#.
For measure 3, beat 1 the note is B because if you count up the scale you see the first space is F, then A, then, because the note is on a line, you count one whole step higher instead of two, and you get B,
The reason that the accidental is D# is because an accidental is a symbol that alters the note by a half step. D# is a sharp, meaning it makes D one half step higher than before.
I hope you understood my explanation! If you did, I am really grateful, but if you didn't I hope I can do better next time. Thank you for taking the time to read this!