While conducting research you found the following piece of evidence in a biography written by a friend of Jack Londons: Jack London loved working on his ranch in Glen Ellen, California. What type of source does the evidence directly above come from?

The evidence in the passage is a secondary source.

Explanation:

A primary source can be defined as any record containing firsthand information. An autobiography written by Jack London would be a primary source when it comes to a research about him. Other examples of primary sources are diaries, letters, memoirs, etc. A biography, on the other hand, is a secondary source. The person writing it is writing about someone else's life and experiences. Even if it is a friend, and even if this friend witnessed some things, the biography as a whole concerns another person's life story, not the author's.

this is the answer , p = 1 + (1/10)x

step-by-step explanation:

we have,

at sea level pressure is 1 atmosphere (i.e at x =0, p0=1 atmosphere)

at depth 23 meters , pressure = 3.3 atmosphere

since the pressure increases at constant rate as the depth increases, so we can write a relation as:

p =p0 +   kx   , where p is the pressure  , p0 is the initial pressure, x is the depth and k is constant rate of increasing.

to find constant rate k, plug p = 3.3 , p0 = 1 and x= 23 meters

we get,

  3.3 = 1 + k * 23

k = 2.3 / 23   = 1/10

so we can write the function formula as:   p = 1 + (1/10)x

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