Using the formula from part a, calculate the retail price for each quantity range. (2 points) Quantity 0-20 pairs 21-40 pairs 41-60 pairs 61-80 pairs 81 or more pairs Wholesale Price (per pair) $25.00 each $23.00 each $21.00 each $19.00 each $17.00 each Retail Price (per pair)

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z