On the last day of the school book fair or pencils were one set price and all books with a different set price Sammy bought two pencils and 6 books for $14 bail bond for pencils and one book for $8. what was the set price for a pencil? what was the set price for a book?

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

9is the geometric mean between x and 12

The minimum height for riding on the super screaming spinner at the theme park is 52 inches. which of the following expressions shows the height to ride?