Suppose a frozen package of hamburger meat is removed from a freezer that is set at 0°f and placed in a refrigerator that is set at 38°f. six hours after being placed in the refrigerator,
the temperature of the meat is 12°f. how long will it take the meat to thaw (reach a temperature above 32°f)? give answer to three decimal
places.

What signals you that factoring by grouping is the best method to use when factoring a problem?

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

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?