You have to add AB and for BC you have to add it then you get your answer
14/15 - 5/12
Common denominator is 60.

56/60 - 25/60
= 31/60 as fraction.
= 0.516 as decimal.
Answer:

Step-by-step explanation:

V(t) = 2t^2 - 3t - 3
for an acceleration a(t),
a(t) = d (v(t)) / d t
a(t) = 4t - 3
at t=2
a(2) = 8 - 3
a(2) = 5 feet/s^2