Katyusha is collecting data about her flower garden on a coordinate grid. Each ordered pair represents the depth (in centimeters) that the bulb was planted, and the height (in centimeters) of the flower, respectively, of a flower in her garden. Snowdrop: (12,15)(12,15)(12,15)(, 12, comma, 15, )Hyacinth: (20,30)(20,30)(20,30)(, 20, comma, 30, )Daffodil: (20,54)(20, 54)(20,54)(, 20, comma, 54, )Which coordinate plane correctly shows Katyusha's data so far? Choose 1 Choose 1 (Choice A) A (Choice B) B (Choice C) C

Write a corresponding real world problem to represent 2x - 125=400

What is 20+(5 x 2/5 )+ 3 show your work

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