An airplane has begun its descent for a landing. when the airplane is 150 miles west of its destination, its altitude is 25,000 feet. when the airplane is 90 miles west of its destination, its altitude is 19,000 feet. if the airplane's descent is modeled by a linear function, where will the airplane be in relation to the runway when it hits ground level?

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

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83

What is the maximum of the sinusoidal function