Respuesta :

Answer:

1.05 (0.2x + 1/2y + 0.75z)

Step-by-step explanation:

Finding the cost of each item :

1 Sweatshirt

  • Cost = $x
  • Discount = 80% off
  • Price = (100% - 80%)(x)
  • Price = 0.2x

2 T-shirts

  • Cost = $y
  • Discount = Buy one, get one 50% off
  • Price = (50%)(y)
  • Price = 1/2y

1 Pair of Pants

  • Cost = $z
  • Discount = 25% off
  • Price = (100% - 25%)(z)
  • Price = 0.75z

Now, the final cost (after applying sales tax) is :

  • 1.05 (0.2x + 1/2y + 0.75z)
  • Option #1