Use the Agricultural Time series database on “Excel Databases. xls”. Use the variable Broccoli over the first three years of the study (Months 1 – 36 only). Assume Month 1 = January. Develop an estimated regression equation that can be used to account for any seasonal and linear trend effects. Use dummy variables for the monthly seasonal effects in the data. Let Jan = 1 if January, 0 otherwise. Feb = 1 if February, 0 otherwise. Etc. This means you will have 11 dummy variables, when all dummy variables are 0, the observation corresponds to December. Look at the actual value for January of the next year (month 37). What is the difference between the observed amount of broccoli and the forecasted amount you found in the previous question? Round your answer to a whole number.

Adam plans to choose a video game from the section of the store where everything is 75% off. he writes the expression d-0.75d to find the sale price of the game if the original price is d dollars. gena correctly writes another expression, 0.25d, that will also find the sale price of the game if the original price is d dollars. use the drop down menus to explain each part of adams and rena's expression

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

At the beginning of the day, stock xyz opened at $6.12. at the end of the day, it closed at $6.88. what is the rate of change of stock xyz? a. 1.17% b. 11.0% c. 12.4% d. 81.5%