Evaluate Algebraic Expressions Quick Check
4 of 54 of 5 Items
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
580 square inches
580 square inches
9,940 square inches
9,940 square inches
230 square inches
230 square inches
34,790 square inches
To evaluate the expression 720 - 10s^2, substitute s = 7:
720 - 10(7^2)
720 - 10(49)
720 - 490
= 230 square inches
So, the correct answer is 230 square inches.