This graph shows the inequality 25x+15y≥200, which represents the number of chairs and tables a carpenter can build, where x represents the number of chairs and y represents the number of tables. Which labeled points on the graph indicate a viable combination of chairs and tables that meets the carpenter's production goal?

(5, 2)
(5, 2)

None of the points are a viable solution
None of the points are a viable solution

(15, 4.5)
(15, 4.5)

(18, 10)
(18, 10)

1 answer

To determine which labeled points represent viable combinations that meet the inequality \( 25x + 15y \geq 200 \), we can start by checking each point against the inequality.

  1. Point (5, 2): \[ 25(5) + 15(2) = 125 + 30 = 155 \] Since \( 155 < 200 \), this point does NOT meet the production goal.

  2. Point (15, 4.5): \[ 25(15) + 15(4.5) = 375 + 67.5 = 442.5 \] Since \( 442.5 \geq 200 \), this point DOES meet the production goal.

  3. Point (18, 10): \[ 25(18) + 15(10) = 450 + 150 = 600 \] Since \( 600 \geq 200 \), this point DOES meet the production goal.

In summary:

  • (5, 2) is NOT a viable solution.
  • (15, 4.5) IS a viable solution.
  • (18, 10) IS a viable solution.

So the viable combinations of chairs and tables that meet the carpenter's production goal are (15, 4.5) and (18, 10).