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
580 square inches
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To find the area of 10 squares with 7-inch sides, we can calculate the area of one square and multiply by 10.
The area of one square is 7 * 7 = 49 square inches.
So the area of 10 squares is 10 * 49 = 490 square inches.
To find how much space Robert will have left for his presentation, we subtract this area from the total area of the poster board:
720 - 490 = 230 square inches.
Therefore, Robert will have 230 square inches left for his presentation.