Bo has $500 in his savings account. he plans to add $150 to his savings account every month. recently, he purchased a tractor to use on his farm for $4,000. he plans to pay off the total price of the tractor over time by paying $200 a month. how much will bo have in savings when he can pay off the tractor in full?

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