You have 64 grams of a radioactive kind of strontium. if its half-life is 3 hours, how much will
be left after 9 hours?

The appalachian trail is a hiking trail that passes through the appalachian mountains. three members of a teen hiking group hiked a section of the trail. the hikers stopped at a rest area and equally shared 3 4 gallon of water. how much water did each person get?

Which equation matches the graph shown ?

Nine more than four times a number is the same as one less than twice the number. find the number?