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. 
-Approximately what percentage of the people aged 25-40 had a systolic blood pressure reading greater than or equal to 130?
Definitions:
Psychotherapy
A therapeutic treatment involving psychological techniques, aimed at overcoming mental health problems or emotional issues.
Psychopharmacology
Psychopharmacology is the study of how drugs affect the mind, emotions, and behaviors.
Psychoanalysis
The term Freud used for both his theory of personality and his therapy for the treatment of psychological disorders; the unconscious is the primary focus of psychoanalytic theory.
Free Association
A psychoanalytic technique in which a patient says whatever comes to mind without censorship as a way of exploring the unconscious.
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