a 5in x 7in picture is in a frame of uniform width x the area of the picture in the frame together is 99in^2 how wide is the frame​

1. why is a frequency distribution useful? it allows researchers to see the "shape" of the data. it tells researchers how often the mean occurs in a set of data. it can visually identify the mean. it ignores outliers. 2. the is defined by its mean and standard deviation alone. normal distribution frequency distribution median distribution marginal distribution 3. approximately % of the data in a given sample falls within three standard deviations of the mean if it is normally distributed. 95 68 34 99 4. a data set is said to be if the mean of the data is greater than the median of the data. normally distributed frequency distributed right-skewed left-skewed

Ineed with question three. i don't understand how i'm supposed to achieve 3 marks.

Find the area between y=e^x and y=e^2x over [0,1]