For the following exercises, select the most representative decibel level for each sound.

1. Gas lawn mower: [latex]70[/latex] dB, [latex]100[/latex] dB, [latex]120[/latex] dB
2. Radio playing loud enough to sing along to at home: [latex]20[/latex] dB, [latex]50[/latex] dB, [latex]70[/latex] dB
3. Office noise on a floor of people working at desks: [latex]40[/latex] dB, [latex]60,[/latex] dB, [latex]80[/latex] dB
4. Conversation in a quiet room: [latex]60[/latex] dB, [latex]80[/latex] dB, [latex]100[/latex] dB
5. Fast-moving train passing by when sitting in a car about [latex]20[/latex] ft from the tracks with windows down: [latex]40[/latex] dB, [latex]60[/latex] dB, [latex]80[/latex]

For the following exercises, state the requested note.

6. What is one half-step above G^#?
7. What is one whole step down from G^♭?
8. What is three half-steps above D?
9. What is two whole steps down from A^#?
10. What is two half-steps down from E?
11. What is an octave above B₄?
12. What is two octaves below F₅?
13. What is three octaves above G₂?
14. Given that the frequency of A₄[latex]=440[/latex] Hz, what is the frequency of A₁?
15. Given that the approximate frequency of F₄[latex]=349[/latex] Hz, what is the approximate frequency of F₅, rounded to the nearest whole number?
16. Given that the approximate frequency of D₄[latex]=294[/latex] Hz, what is the approximate frequency of D₂, rounded to the nearest whole number?
17. Given that the frequency of A₃[latex]=220[/latex] Hz, what is the frequency of A₅?