Unclear question. I infered you are referring to the grammatical structure/usage of some expressions in the sentence.
Answer:
It is an Idiomatic expression.
Explanation:
The expression "following the crowds" is idiomatic, meaning It should be understood figuratively.
In a sense, as used in this context it implies there's a price for doing whatever others do pertaining to how long they cook. So one must maintain his own cooking time schedule not following the crowd.
Answer:
Education from a certain college is valued above others by how selective they are to get accepted into their school.
Explanation:
There are some schools that do not require as high scores on tests such as the SATs or ACTs and are willing to accept a student with a lower GPA. It is generally considered of higher value when someone has an education from a college that is tougher to get into.
To begin, density is found with the formula "mass/volume." Question has already given you a mass of 176 grams. Next you must find the volume. To do so you must cube the length of one edge of the given aluminum cube which is four centimeters. (4cm×4cm×4cm=64cm^3) This is your cube's volume and now you can divide. Start with putting 176g/64cm^3 and you should get 2.75g/cm^3. With correct significant numbers your answer doesn't change.
