The ball's velocity will be represented by the derivative of its distance function:

Now find the times

for which this is equal to 30, i.e. solve

This has two solutions,

, but only one is positive and falls in the interval
![[0,3]](https://tex.z-dn.net/?f=%5B0%2C3%5D)
. So the velocity reaches 30 cm/s when

.
g = -3,5
8 - |2g - 5| = 8 - |2 · (-3,5) - 5| =
= 8 - |-7 - 5| = 8 - |-12| = 8 - 12 = <u>-</u><u>4</u>
Answer:
None.
Step-by-step explanation:
This has no real factors.
toy store $8.36 /2 = 4.18 per game
online $12.84 /3 =$4.28 per game
The toy store has the lowest price