Find a System of Inequalities Describing the Following Problem

question 72

Multiple Choice

Find a system of inequalities describing the following problem. A store sells two brands of VCRs. Customer demand indicates that it is necessary to stock at least twice as many VCRs of brand A as of brand B. At least 40 of brand A and 10 of brand B must be on hand. There is room for not more than 80 VCRs in the store.

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Definitions:

Schizophrenia

A noteworthy mental dysfunction characterized by disruption in mental operations, sensory interpretations, affectivity, communicative proficiency, self-awareness, and lifestyle.

Psychosis

A mental disorder characterized by a disconnection from reality, which may include hallucinations and delusions.

Schizophrenia

A severe mental disorder involving a breakdown in the relation between thought, emotion, and behavior, leading to faulty perception, inappropriate actions and feelings, withdrawal from reality and personal relationships into fantasy and delusion, and a sense of mental fragmentation.

Influenza

A highly contagious viral infection of the respiratory tract that causes annual outbreaks and can be severe, leading to hospitalization or death in high-risk groups.