A Rectangular Box Is to Have a Square Base and a Volume

question 157

Multiple Choice

A rectangular box is to have a square base and a volume of 20 ft³. The material for the base costs , the material for the sides costs , and the material for the top costs . Letting x denote the length of one side of the base, find a function in the variable x giving the cost of constructing the box. ​ ​

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Definitions:

Oral Stage

A phase in Freud's psychosexual development theory during which an infant's pleasure centers on the mouth.

Exploration

The action of traveling or searching through an unfamiliar area to learn about it or discover new information.

Anal Stage

The second stage in Freud's psychosexual development, occurring from about 18 months to three years of age, where the child's focus is on controlling bladder and bowel movements.

Latency Stage

A phase in Freud's psychosexual development theory occurring between the ages of six and puberty, where there is a reduction in sexual urges and interests.