Your friend really wants to buy the newest, coolest cell phone which will cost him $310. He gets a job detailing cars and SUVs and plans to save all the money he earns. If he gets paid $60 to detail a car and $85 to detail an SUV, which of the following linear inequality can be used to determine how many of each he must detail in order to earn at least $310?

Respuesta :

The linear inequality that can be used to determine how many of each he must detail in order to earn at least $310 is 60x + 85y ≤ 310

Inequality

let

  • Number of cars = x
  • Number of SUV = y
  • Amount paid for detailed car = $60
  • Amount paid for detailed SUV = $85
  • Cost of coolest cellphone = $310

(Amount paid for detailed car × Number of cars) + (Amount paid for detailed SUV × Number of SUV) ≤ Cost of coolest cellphone

60x + 85y ≤ 310

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