Please state the full question what percent of what DVD in her collection we dont have enough information to give you an answer, I will just list all the possible answers,
8+12+7+3 =30
Possible answers
Action = 8/30 = 26% or 27% depending if you are rounding
Let`s say that the expression is written in the form:a * 10^k.4 * 10^3 + 4 * 10^2 = = 4 * 10 * 10^2 + 4 * 10^2 = = 40 * 10^2 + 4 * 10^2 = = 44 * 10^2 = 4.4 * 10^3.Answer:a = 4.4 and k = 3 and the expression in the scientific notation is:4.4 * 10^3.
