How do you find the simplest from of 8a-(-3-5a)-2a

Which statements are true about box plots? check all that apply. they describe sets of data. they include the mean. they show the data split into four parts. they show outliers through really short “whiskers.” each section of a box plot represents 25% of the data.

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)

How do i take any fraction and make it into a decimal or percentage?