What is the answer to |4m-2|=10?

m = 3,-2, as

4m - 2 = 10                                 and                             4m - 2 = -10

4m = 12                                      and                              4m = -8

m = 3                                          and                              m = -2

wholesale price is the initial price before markup. retail price comes after the markup.

a price of 8 bucks that's marked up by 100%   is

formula: initial price + (percent markup in fraction/decimal)(initial price)

8+(1)(8)

8+8

16

retail price is $16.