AshleyBishop20 AshleyBishop20 13-03-2017 Mathematics Answered There are four brands of smart phones that are most popular in United States. The number of people in United States that have each brand is given. Brand A: 4.48x10^4;Brand B: 3.84x10^7; Brand C:6.4x10^6; Brand D: 1.50x10^7