Question

Please Help! Will give Medal!
Fiber-optic cables are used widely by broadcast and cable companies. When light passes through a fiber-optic cable, its intensity decreases with the increase in the length of the cable. If 1000 lumens of light enters the cable, the intensity of light decreases by 1.2% per meter of the cable.

Answer 1

Part A: Can this situation be represented by an exponential function? Justify your answer.

I said it would cause it's linear ----Right??

Answer 2

If x is the distance in metres, and it decreases by 1.2% each time, then after each metre, 98.8% remains. Convert 98.8% to a decimal, 0.988.

1000 is the initial, so

1000*(0.988)^x

Answer 3

@phi @myininaya @.Sam. @Ashleyisakitty Please help

Answer 4

Would the graph look like this? @Paey