contains the most affordable cars of 2015 according to Kelly Blue Book. If J= {Chevrolet Spark, Nissan Versa, Scion iQ, Honda Fit, Toyota Yaris, Chevrolet Spark EV, Kia Rio, Toyota Corolla}, how many proper subsets does J contain?
A set contains all its subsets including the empty set and itself. Therefore, the number of proper subsets that J contains can be calculated using the formula 2^n - 2, where n is the number of elements in the set.
In this case, J contains 8 elements. So, the number of proper subsets in J can be calculated as:
2^8 - 2 = 256 - 2 = 254
Therefore, J contains a total of 254 proper subsets.