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

580 square inches
580 square inches

34,790 square inches
34,790 square inches

9,940 square inches
9,940 square inches

Answer 1

wrong

Answer 2

To find how much space is left on the poster board, we need to subtract the area of the 10 squares from the total area of the poster board.

The formula for the area of a square is A = s^2, where s is the side length.

When s = 7, the area of each square is 7^2 = 49 square inches.

So the total area of the 10 squares is 10 * 49 = 490 square inches.

To find the remaining space, we subtract the area of the squares from the total area of the poster board:

720 - 490 = 230 square inches.

Therefore, Robert will have 230 square inches left for his presentation.

Answer 3

I apologize for the mistake. Let's find the correct answer.

The formula for the area of a square is A = s^2, where s is the side length.

When s = 7, the area of each square is 7^2 = 49 square inches.

So the total area of the 10 squares is 10 * 49 = 490 square inches.

To find the remaining space, we subtract the area of the squares from the total area of the poster board:

720 - 490 = 230 square inches.

Therefore, Robert will have 230 square inches left for his presentation.