Which choice best describes the following sentence?

cal earned extra credit in science class by volunteering at the aquarium on weekends.

it is a complete and correct sentence.
it features a comma splice.
it is a fused sentence.
it is a rambling sentence.

The sentence is a complete and correct sentence. Option A is correct.

A complete sentence is made up of three elements: a subject, verb, and an object. The subject is usually a noun or a pronoun. Besides, since there's a subject, there will be a verb due to the fact that all verbs need a subject. What is more, the object of a sentence is the element that acts upon by the subject. Moreover, sometimes commas play an importal role in a complete sentence.

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

which is the following what are you asking?