The best way is to add more security. It can be done by using different methods like strengthening passwords with numeric and character symbols. <span> A</span><span>void signing in laptops and computers that are not yours, so your accounts wouldn't be automatically saved. Keep your gadgets and computer free from viruses. Lastly, do not tell your emails and passwords to anyone.</span>
I don't see the picture so i can't answer your question
<span>Across nearly seven million years, the human brain has tripled in size, with most of this growth occurring in the past two million years.</span>
Answer:
See Explanation
Explanation:
The question is incomplete as the value of s(t) is missing;
However, the following explanation will guide you;
I'll continue my explanation with the following assumption that:

Required
Determine the velocity at t = 8
To do this; first calculate s(t) by substituting 8 for t in 




Next, is to calculate the velocity by dividing s(t) by t where t = 8
i.e.

Substitute 8 for t

Substitute 72 for s(8)


<em>So: all you need to do is first calculate s(8), then divide the resulting value by 8 to get your result</em>