Suppose your club is selling to
raise money. it costs $100 to rent a booth from which to sell the candles. if the candles cost $1 each and are sold for $5 each, how many candles must be sold to equal your expenses?

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