Parakeets Pet Store never has more than a combined total of 20 cats and dogs and never more than 8 cats. Given that x represents the number of cats at the pet store and y represents the number of dogs at the pet store, SELECT ALL possible solutions.

Responses
(8, 12)
(18, 0)
(12, 8)
(0, 18)
(9, 11)
(6, 14)
(7, 15)
(14, 6)

1 answer

To determine the valid solutions for the number of cats (x) and dogs (y) at Parakeets Pet Store, we need to consider the following constraints:

  1. The total number of cats and dogs cannot exceed 20:
    \( x + y \leq 20 \)

  2. The number of cats cannot exceed 8:
    \( x \leq 8 \)

Now, we will evaluate each option:

  1. (8, 12):

    • \( x + y = 8 + 12 = 20 \) (valid since ≤ 20)
    • \( x = 8 \) (valid since ≤ 8)
    • Valid.
  2. (18, 0):

    • \( x + y = 18 + 0 = 18 \) (valid since ≤ 20)
    • \( x = 18 \) (invalid since > 8)
    • Not Valid.
  3. (12, 8):

    • \( x + y = 12 + 8 = 20 \) (valid since ≤ 20)
    • \( x = 12 \) (invalid since > 8)
    • Not Valid.
  4. (0, 18):

    • \( x + y = 0 + 18 = 18 \) (valid since ≤ 20)
    • \( x = 0 \) (valid since ≤ 8)
    • Valid.
  5. (9, 11):

    • \( x + y = 9 + 11 = 20 \) (valid since ≤ 20)
    • \( x = 9 \) (invalid since > 8)
    • Not Valid.
  6. (6, 14):

    • \( x + y = 6 + 14 = 20 \) (valid since ≤ 20)
    • \( x = 6 \) (valid since ≤ 8)
    • Valid.
  7. (7, 15):

    • \( x + y = 7 + 15 = 22 \) (invalid since > 20)
    • Not Valid.
  8. (14, 6):

    • \( x + y = 14 + 6 = 20 \) (valid since ≤ 20)
    • \( x = 14 \) (invalid since > 8)
    • Not Valid.

Final Valid Solutions:

  • (8, 12)
  • (0, 18)
  • (6, 14)

Thus, the valid responses based on the constraints provided are:

  • (8, 12)
  • (0, 18)
  • (6, 14)