Find the measure of each interior angle of the regular polygon.

Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation

If the diagram polygon abcd is a reflection across ef to make polygon a'b'c'd'.

Consider the image of klmn for the translation (x, y) → (x – 2, y – 1). what is the ordered pair of l′?