Question

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

230 square inches
230 square inches

34,790 square inches
34,790 square inches

9,940 square inches
9,940 square inches

580 square inches

Answer 1

To find the area of 10 squares with 7-inch sides, we first find the area of one square by squaring the side length, which is 7. So the area of one square is 7^2 = 49 square inches.
To find the total area of 10 squares, we multiply the area of one square by 10, which gives us 49 * 10 = 490 square inches.
To find how much space is left for the presentation, we subtract the area of the squares from the total area of the poster board:
720 - 490 = 230 square inches.
So the correct answer is 230 square inches.