8. Katie and Sam each wrote a number on the board. Katie wrote the number 52,478. The 4 in Sam's number is 10 times greater than the 4 in Katie's number.
Which number did Sam write?
A.
24,781
B.
42,781
C.
78,421
87,241
D.

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =