The Total Weekly Sales for a Newly Released Portable Media $$\left\{ \begin{array} { l l } S = 10 x + 70 & \text { PMP1 } \\S = - 10 x + 210 & \text { PMP2 }\end{array} \right.$$

question 38

Multiple Choice

The total weekly sales for a newly released portable media player (PMP) increased each week.At the same time,the total weekly sales for another newly released PMP decreased each week.Models that approximate the total weekly sales S (in thousands of units) for each PMP are​ $$\left\{ \begin{array} { l l } S = 10 x + 70 & \text { PMP1 } \\S = - 10 x + 210 & \text { PMP2 }\end{array} \right.$$ ​ where x represents the number of weeks each PMP was in stores,with x = 0 corresponding to the PMP sales on the day each PMP was first released in stores.After how many weeks will the sales for the two PMPs be equal?
​

• A)11 weeks
• B)9 weeks
• C)7 weeks
• D)3 weeks
• E)5 weeks

Understand the differences in academic achievement among children from immigrant families and the factors influencing it.

Comprehend how nonschooled and schooled children differ in memory and logical thinking tasks.

Recognize the role of formal schooling in improving cognitive performance, including logical thinking and memory.

Identify how the home environment and parental educational background affect children’s learning and cognitive development.

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Definitions:

Vocational Planning

The process of exploring and preparing for specific careers based on an individual's interests, skills, and values, often involving educational and training paths.

Identity

The qualities, beliefs, personality, looks, and expressions that make a person or group distinct from others.

Attitude

A settled way of thinking or feeling about someone or something, typically reflected in a person's behavior.

Cognition

The mental action or process of acquiring knowledge and understanding through thought, experience, and the senses, encompassing processes like memory, judgment, and problem-solving.