Answer:
$5.184
Explanation:
The cost can be calculated using the formula: 
Before using this, we require the following conversions:
<em>320 W → kW:</em>
<em>30 Days → Hours:</em>

Using the above stated formula:

54 volts
Ohms law. E= I x R
Answer: Even low airborne concentrations (100 ppm) of ammonia may produce rapid eye and nose irritation.