Round the hight and then the weight and c what you get
Answer:

Step-by-step explanation:

multiply constants and add the exponents

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

.
Using this formula, the gross profit percentage is approx. 75%