Question

What is the mean cost of replacing brake pads for four different vehicles ai at the following prices $120,$235,$98,$142

Answer 1

The mean is the average of a set of numbers.  So to do that:

add all the numbers 120+235+98+142=$595

Then divide that by the total number in the set, in this case it is 4.

$595/4= $148.75 assuming that the prices given are the final price of the job.