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)
To find the area of each square, we square the length of one side. 10s^2 = 10(7^2) = 10(49) = 490
Then, to find the remaining area after using 10 squares, we subtract the area of the squares from the area of the poster board: 720 - 490 = 230 square inches.
Thus, Robert will have 230 square inches left for his presentation. Answer: \boxed{230}.
To find how much space Robert will have left for his presentation, we need to subtract the total area covered by the 10 squares from the area of the poster.
The area of each square can be calculated by multiplying the length of one side by itself.
Given that the length of each side of the square is 7 inches (s = 7), the area of each square is 7 * 7 = 49 square inches.
The total area covered by the 10 squares is 10 * 49 = 490 square inches.
To find the remaining space for Robert's presentation, we subtract the total area covered by the squares from the area of the poster, which is 720 square inches.
Therefore, 720 - 490 = 230 square inches.
So, Robert will have 230 square inches of space left for his presentation.