3 A golfer hits the golf ball. The quadratic y = -12x2 + 48x gives the time x seconds
when the golf ball is at height 0 feet. In total, how long is the golf ball in the air?

Which of the following is the missing term, a2, of the geometric sequence in which a1=2 and a3=200

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

Which of the following is an equation of a line parallel to the equation y=4x+1?