Adena used a qualateral in her ary design. the quadrlateral has no sides ,and only one pair of opposite sides parallel what shape of the quadrileteral she used

The quadrilateral used here is a trapezium.

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.