There are 18 children at a sleepover party. Eleven of the children have blankets, and the other 7 children have stuffed animals. No children have both. If Jorge arrives and carries a stuffed animal, what fraction of the children at the party now have stuffed animals? StartFraction 7 Over 19 EndFraction
StartFraction 8 Over 19 EndFraction
StartFraction 7 Over 18 EndFraction
StartFraction 8 Over 18 EndFraction

Volume of cylinder with a radius of 8cm and height of 25 cm

An architect is designing a water fountain for a park she uses the given function to model the water jet flowing from the fountain nozzles where h(x) gives the height of the water jugs in feet x feet from the starting point h(x)=-1/20x+x+15

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