Los alumnos inscritos en una escuela son formados en fila de 2 y sobra uno. se forman en fila de tres y también sobra uno. lo mismo sucede en filas de 4,5 y 6. por fin en filas de 7 no sobra ninguno.
¿cuántos alumnos están inscritos? ?
¿cuántos alumnos serían si formados de las las formas escritas no sobrara ninguno?

Can someone me with my hwplz(only the circled ones)

The rate of decay of a radioactive substance depends upon the amount present initially. the mass y (mg) of the radioactive substance cobalt-60 present in a sample at time t (years) is represented by the exponential equation y=50e −0.1315 t . answer the following questions in complete sentences. 1. how does the exponential equation above compare to the equation for simple interest that is compounded continuously? explain the similarities. 2. what is the initial amount of cobalt-60 in the sample? 2. how much cobalt-60 is left after 8.4 years? show your work. 3. what would be the y-intercept of the graph? what does it represent? 4. after how many years will the amount of cobalt-60 left be 6.25 mg? explain what happens to the cobalt-60 after 50 years? 5. discuss some “real-world” examples and uses of cobalt-60

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.