Robert is preparing a poster-board presentation. He wants to make a decorative pattern with 10 squares to fill part of the poster. The area of the poster board is 720 square inches. To find how much space Robert will have left for his presentation if he uses squares with 7-inch sides, evaluate 720 − 10s2 when s = 7 .(1 point) Responses 580 square inches 580 square inches 34,790 square inches 34,790 square inches 230 square inches 230 square inches 9,940 square inches
To find the area of 10 squares with side length 7 inches, we can find the area of one square and multiply it by 10.
The area of one square is 7^2 = 49 square inches.
So the total area of 10 squares is 10 * 49 = 490 square inches.
To find how much space Robert will have left, we can subtract the area of the squares from the total area of the poster board:
720 - 490 = 230 square inches.
Therefore, the correct answer is 230 square inches.