Use the image below to describe at least three different ratios, written in simplest form. Include at least one part-to-part ratio and one part-to-whole ratio. 

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?

Zack and tia played chess for 50 min they put the chessboard away at 11: 20 when did they start

The coverage of a base station of a telecommunication company forms a disk with a radius of (kilometers). let be the distance of a cellphone from a base station. assume that the location of cellphones in use are randomly uniformly distributed within the disk. calculate the mean and variance for the random variable.