Curt is installing a picket fence around his garden which is 45.45 ft by 14.63 ft. when he gets to the hardware store he finds that each picket fence slat is two feet wide. if curt does not want any spaces between each slat, use estimation to determine how many slats of fencing he should buy.

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