First find the time that the ball is level with the top of the building on its descent. You can do this by solving 280 = -16^2 + 48t + 280 for t. This gives t = 3 seconds .
Then when the ball reaches the ground the time t is obtained by solving 0 = -16t^2 + 48t + 280 This gives t = 5.94 seconds.
Answer in interval notation is (3, 5.94].
58r=70
r=35/29
r≈1.2069
So the rate was about 1.21 or if you prefer about 20.7%
3.10/155= 0.02 } subtract = 0.07 more
7.65/85= 0.09 }
343 divided by 7 is 49
There are 49 groups of 7 in 343
The answer is 49
