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Polynomials in real life

Polynomial let us describe real life situations
Example 1: In Almería, the taxi ride costs €1.50 for the flag drop and €0.84 for each kilometer travelled. Mathematically it can be represented by the polynomial 1.5 + 0.84 x
Enter the polynomial in the Geogebra applet below and answer the questions

¿What values of x make sense to the situation?

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  • A
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Check my answer (3)

How much will the ride cost if we travel 3 km?

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  • A
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Check my answer (3)
Example 2: We throw a ball up from a height of 5 meters. After a few seconds the ball reaches the ground.
Enter the polynomial in the Geogebra applet below and answer the questions

What is the maximum height the ball reach?

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Check my answer (3)

How many seconds does it take for the ball to reach the ground?

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Check my answer (3)

In what second does the ball reach its maximum height?

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Check my answer (3)
Example 3: Two stores sell the same t-shirts. The profits of the store A are described by the polynomial 2x +3. The profits of the store B are 4x - 2. Answer the questions.

Which store sold more t-shirts the second year?

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  • A
  • B
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Check my answer (3)

Which store sold more t-shirts the third year?

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  • A
  • B
  • C
Check my answer (3)

In what year the sales of the two stores have been the same?

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  • A
  • B
  • C
  • D
Check my answer (3)