I believe the answers can be narrowed down to A or D, it depends on which direction its moving in and at which location you desire to measure each.
Answer:
92.65 % light bulbs last less than 2080 hours
Step-by-step explanation:
We are given that The amount of time a certain brand of light bulb lasts is normally distributed
Mean =
Standard deviation =
We are supposed to find What percentage light bulbs last less than 2080 hours, to the nearest tenth

Z=1.45
Refer the z table for p value
p value = 0.9265
Hence 92.65 % light bulbs last less than 2080 hours
The sides of central angles will=always be congruent.
The sides of inscribed angles will=sometimes be congruent.