Answer:
Option B.
Step-by-step explanation:
The cost of each LED bulb = $6.95
It costs to change a bulb in labor = $3
Total cost on each bulb = 6.95 + 3 = $9.95
There are 100 lamps to install LED bulbs and change the bulbs.
LED bulb last an average of 5 years. over a 10-year period total bulbs will be used 2 times = 100 × 2 = 200 bulbs
Total cost for 200 bulbs in 10 years = 200 × 9.95
= $1,990
The cost per year = [tex]\frac{1990}{10}[/tex] = $199 ≈ $200 per year
It will cost $200 per year
Option B.
