Pls help radium-226 an isotope of radium has half of 1,601 years. suppose your chemistry teacher has a 50 gram sample of radium-226. How much of the sample will be remaining after 100 years?

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).

The radius of a sphere is 3 inches. which represents the volume of the sphere?

The graph of f(x) = |x| is transformed to g(x) = |x + 11| - 7. on which interval is the function decreasing?