Answer:
k = 0.5
Step-by-step explanation:
Answer:the answer is 14
it's the 2nd one
d = 3 + at^2
-3 | -3
d - 3 = at^2
d - 3/a = t^2
√d - 3/a = √t^2
t = √d - 3/a
Answer: 5
5
11
8