A nurse measured the blood pressure of each person who visited her clinic. Following is a relative-frequency histogram for the systolic blood pressure readings for those people aged between 25 and 40. Use the histogram to answer the question. The blood pressure readings were given to the nearest whole number. 
-Given that 700 people were aged between 25 and 40, approximately how many had a systolic blood pressure reading of 140 or higher?
Definitions:
FADH₂
A reduced form of flavin adenine dinucleotide, a redox-active coenzyme involved in cellular respiration.
Aerobic Respiration
A metabolic process that uses oxygen to convert glucose or other organic substrates into energy, carbon dioxide, and water.
Electron Transport Chain
A series of protein complexes located in the inner mitochondrial membrane that facilitate electron transfer and ATP production.
Glycolysis
The metabolic pathway that breaks down glucose into pyruvate, producing energy in the form of ATP and NADH, operating in the cytosol of cells.
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