Is itself and stands for or means something else

Symbol

Explanation:

A symbol is an object, action, place or idea that stands for something else. A symbol is used in literature in order to stand for something, or to represent a particular idea. The use of a symbol can help bring attention to the object that it is meant to be representing. It can also allow the author to introduce an idea that is carried throughout the text.

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

i don't know sorry i cannot read a novel in 30 min.

explanation:

but just in case i think the answer is b.