Which is a complex sentence? a. the director advised her clients, but they did not always follow her guidance. b. we drove to the airport and picked up my cousins, who flew in from toronto. c. upon hearing the news, marianne cried tears of joy, and sean hugged his mother. d. the administration made drastic changes, but the employees ignored the new instructions.

The correct answer is B. We drove to the airport and picked up my cousins, who flew in from Toronto.

Explanation:

In grammar, sentences can be classified as simple, compound or complex. In the case of complex sentences, these are sentences that contain an independent clause which is a sentence that expresses a complete idea and one dependent clause which is a sentence that needs an independent clause to be complete. Dependent clauses can be identified because they usually provide information but are not a complete sentence by themselves, also, they start with words such as which, when, that, who or subordinating conjunctions such as although, until, because.

Considering this, the one that is a complex sentence is "We drove to the airport and picked up my cousins, who flew in from Toronto" because this sentence is composed by an independent clause "We drove to the airport and picked up my cousins" and one dependent clause "who flew in from Toronto" that provide further information about the first sentence and that contains a subordinating word which is "who".

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