Answer:
$21.70-3.4n
Step-by-step explanation:
Decimal Decisions: 12.70-n+9
Ratio rage: n÷4
Expression: 12.70-n+9+n/4
Combine 12.70 and 9= 21.70
Bring down the rest of the expression.
21.70-n+n/4
Combine -n and n/4= -4n/4÷1n/4= 3/n
So, the answer is $21.70-3.4n