Answer:
the value of hi changes from 58 to 0:
h(t) = -4.9t^2 +19.8t
Step-by-step explanation:
If the initial height changes, then the term in the equation that represents that height will change. The initial height term is hi, so it changes from 58 to 0.

Answer:
B
Step-by-step explanation:
Answer:
8.216 put a line on top of the six because it's repeating
Step-by-step explanation:
58 is 50 plus 8. So its 50 and 8.That is for the first one.