Answer:
11.95 dollars
Step-by-step explanation:
Cost of one LED bulb = 6.95 dollars
Cost of changing one bulb = 3 dollars
Life of each bulb = 5 years.
In 10 years, only one time after 5 years the bulbs would have been changed
Hence cost of 100 lamps = 695 and
cost of changing once = 500
Total cost = 1195 dollars for 11 years
Divide this by 10 years to get average cost per year
Cost of 100 lamps per year = 1195/100 = 11.95 dollars
The - number has to t o be more then 6 in order to get -10. Answer= -16
Answer:
A
Step-by-step explanation:
Difference between (x) & (x')
P - P' = (2 - (-6) , 2 - 2) = (-8,0)
Q - Q' = (5 - (-3), 2 - 2) = (-8,0)
etc...
Always get (-8,0) hence -8 in x-direction
