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:
14
Step-by-step explanation:
If he had 14 then he gave away 6, he'd have 8. 8 plus 4 is 12. He had 14 before giving any away.
Answer:
Step-by-step explanation:
The Answer is {x| x <-4 or x> 2}
Answer:
$28.08
Step-by-step explanation:
104%×12+104%×15
=$28.08
Hope this helps!!!