1.A sample of radium has a weight of 1.5 mg in a half-life of approximately 6 years how much of the sample will remain after 6 years? 3 years? 1 year?
2. find a function F which models the amount of radium f(t), in mg, remaining after t years​

(mc 02.03) what set of reflections and rotations would carry rectangle abcd onto itself? reflect over the y-axis, reflect over the x-axis, rotate 180° rotate 180°, reflect over the x-axis, reflect over the line y=x reflect over the x-axis, rotate 180°, reflect over the x-axis rotate 180, reflect over the y-axis, reflect over the line y=x

What is the result of adding the system of equations? 2x+y=4 3x-y=6

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655