Answer: 
Step-by-step explanation:
Given
New mail carrier takes 4 hours for delivery i.e.
New mail carrier completes 
part of work in 1 hour
Old mail carrier takes 3 hours for delivery i.e.
mail carrier completes 
part of work in 1 hour
If they work together, they complete the work in x hours i.e.
3
is the simplify expression
Step-by-step explanation:
Doug because his sequence follows a rule of multiplying by -1/2
Hope I got it right for your sake.
Answer:
Be cheerful and accurate
Step-by-step explanation:
There are other etiquette that may be put in consideration.
★Answer the call within three rings.
★Immediately introduce yourself.
★Speak clearly.
★Only use speakerphone when necessary.
★Actively listen and take notes.
★Use proper language.
Remain cheerful.
★Ask before putting someone on hold or transferring a call.
★Be honest if you don't know the answer.
★Be mindful of your volume.
★Check for and respond to voicemails.
1 kilo gram is 1000 grams. 1 gram is 1000 milligrams. Think you can solve the rest? :)
