PSAT #2

• -19

• -6.3

• 6.3

• 19

• 4x⁴ - 32x³ + 18x - 32

• 4x⁴ - 32x³ - 18x² - 2x - 12

• 4x⁴ - 32x³ - 2x² + 20x - 32

• 4x⁴ - 28x³ - 2x² + 16x - 4

Mathematical Equivalence

ON

• -1 ≤ x ≤ 7

• -7 ≤ x ≤ 1

• x ≤ -1 or x ≥7

• x ≤ -7 or x ≥1

Rafael has a business selling computers. He buys computers from the manufacturer for $450 wach and sells them for $800. Each month, he must also pay fixed costs of $3000 for rent and utilities for his store. If he sells n computers in a month, which of the following equations can be used to find his profit?

• P = n ($800 - $450)

• P = n ($800 - $450 - $3000)

• P = $3000n ($800 - $450)

• P = n ($800 - $450) - $3000

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• -3/2

• -2/3

• 1/2

• 3/4