Iwill award brainliest! which percent is the larger: 1. 8 “a” students out of 40, or 9 “a” students out of 50 2. 6 broken bulbs out of 20, or 7 broken bulbs out of 30 which change (in percent) is the larger: 1. increasing the price from $400 to $500 or increasing the price from $500 to $600 2. losing weight from 100 lb to 90 lb or losing weight from 50 lb to 40 lb

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