Clara is building a triangular garden. She wants the length of the longest side to be three more than twice as long as the length of the shortest side, and the third side will be twelve feet long.

What expression could she write to determine the perimeter of the triangle if s represents the length of the shortest side? (Recall that perimeter is the distance around a shape.)

p = s + 12 + 2s+3 = 3s+15

Clara is building a triangular garden. She wants the length of the longest side to be three more than twice as long as the length of the shortest side, and the third side will be twelve feet long

Clara is building a triangular garden. She wants the length of the longest side to be three more than twice as long as the length of the shortest side, and the third side will be twelve feet long.

What expression could she write to determine the perimeter of the triangle if s represents the length of the shortest side? (Recall that perimeter is the distance around a shape.)

To determine the perimeter of the triangle, we need to add up the lengths of all three sides. Given that Clara wants the longest side to be three more than twice as long as the shortest side, we can write an expression for the length of the longest side as 2s + 3.

The expression for the perimeter would then be: s + 2s + 3 + 12

Simplifying this expression further, we have: 3s + 15

Therefore, the expression Clara could write to determine the perimeter of the triangle is 3s + 15.

3s +12