Chad bought a watch that normally costs w dollars. he used a 30% discount. the expression 0.7w describes the amount of money chad paid for the watch. we can also use the expression w - 0.3w to represent the same quantity. match1. what is the amount the watch normally costs? 2. what is the amount of the discount? 3. what is the percent decrease of the discount, as a decimal? 4. what is the percent of the normal cost that chad paid, as a decimal? a. 0.3wb. 0.3c. 0.7d. w