Maxwell Medina
11/03/2024 · Elementary School

Un negocio de venta de libros en línea aplica una tarifa de envio de \( \$ 20 \) para pedidos cuyo monto total sea menor a \( \$ 150 \), mientras que el envio es gratuito para pedidos de \( \$ 150 \) o más. El costo total de un pedido, denotado como \( C \), depende del total gastado en libros, representado por " \( x \) ", y se formula de la siguiente manera: \[ C(x)=\left\{\begin{array}{l}x+20, \quad x<150 \\ x, \\ x \geq 150\end{array}\right. \] a) Determina los valores de: \( C(80), C(100), C(200), C(300) \) b) ¿Qué indican las respuestas del inciso a?

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### a) Cálculo de \( C(80) \), \( C(100) \), \( C(200) \), \( C(300) \) 1. **Para \( x = 80 \)**: \[ C(80) = 80 + 20 = 100 \quad (\text{ya que } 80 < 150) \] 2. **Para \( x = 100 \)**: \[ C(100) = 100 + 20 = 120 \quad (\text{ya que } 100 < 150) \] 3. **Para \( x = 200 \)**: \[ C(200) = 200 \quad (\text{ya que } 200 \geq 150) \] 4. **Para \( x = 300 \)**: \[ C(300) = 300 \quad (\text{ya que } 300 \geq 150) \] ### Resultados: - \( C(80) = 100 \) - \( C(100) = 120 \) - \( C(200) = 200 \) - \( C(300) = 300 \) ### b) Interpretación de las respuestas del inciso a - Para pedidos menores a \( \$150 \), se aplica una tarifa de envío de \( \$20 \). - Para pedidos de \( \$150 \) o más, el envío es gratuito.

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