An isotope of cesium (cesium-137) has a half-life of 30 years. If 4.0 mg of cesium-137 decays over a period of 120 years, how many mg of cesium-137 would remain?

Which expression can be used to find the difference of the polynomials? (10m – 6) – (7m – 4)

According to the online content activity for this lesson, what should you do if you do not understand the material you are trying to learn? a. try a new approach to learning the material. c. re-read the material b. give up d. find someone to give you the answers to the test select the best answer from the choices provided a b c d

The tourism industry’s main job is to cater to customers who 1. travel for pleasure 2. seek the fanciest place to stay overnight 3. want an exquisite dining experience 4. desire to take part in a recreational activity.