The following histogram represents the number of pages in each book within a collection. What is the frequency of books containing at least 200 but fewer than 250 pages? 
Definitions:
Phase Graph
A graphical representation showing the various phases (solid, liquid, gas) of a substance as a function of temperature and pressure.
Specific Heat Capacity
A physical property that describes the amount of heat energy required to raise the temperature of a substance by one degree Celsius (or one Kelvin).
Hydrogen Bonding
A weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other.
Temperature of The Fire
The measure of warmth or coldness of a fire, indicating the intensity of combustion.
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