Solution:
we have been asked to find a function for the given sitatution
The given situation is
A movie store sells DVDs for $11 each. what is the cost C of n DVDs.
Cost of 1 DVD is $11, then the cost of 2 DVDS will be 2x11=$22.
Cost of 1 DVD is $11, then the cost of 3 DVDS will be 3x11=$33.
......................................................................................................................
.......................................................................................................................
Cost of 1 DVD is $11, then the cost of n DVDS will be nx11=$11n.
Since the price is increasing exactly by $11 for each additional DVDS so the Graph will be discrete.
Hence the correct option is C=11n, Discrete.