Part A (4 points): Tonya selected a pair of shoes for the regular price of $80. How much money will she save by using the 20% off coupon? Justify your answer using equations, models, and/or words to explain your mathematical reasoning.
Since ten percent of 80 is 8 dollars, you can simply multiply 8x2, and arrive at the correct discount value of 16 dollars. Subtract 16 from 80 and arrive at the final price of $64.00