Answer:
B(t) = (32 - 4t)% when 0 ≤ t ≤ 8
= 0 % for t > 8
Step-by-step explanation:
According to the question, when Camden left his house in the morning,
the charge in his battery was,
%
= 32 %
So, the charge in Camden's phone, t hours after he left the house is given by,
B(t) = (32 - 4t) % ------------(1)
Now clearly in (1),
0 ≤ t ≤
⇒ 0 ≤ t ≤ 8 since charge in mobile phone can't have a negative percentage and time after Camden left home can't be negative.
So,
B(t) = (32 - 4t)% when 0 ≤ t ≤ 8
= 0 % for t > 8