Question

The dimensions of a rectangle are given in terms of x as shown below. x-1/2 2x + 4 Molly finds the perimeter to be 2(2x +4)+2(x-1/2). Noah finds the perimeter to be 2(2x +4+x - 1/2). Clara finds the perimeter to be 4x+8+2x-1/2. Who correctly found an expression that represents the perimeter of the rectangle? A.Molly and Clara B.Noah and Clara C.Molly and Noah D.Molly, Noah, and Clara

Answer 1

c

Explanation:

Answer 2

The formula for perimeter is 2L +2W, this can be rewritten as 2( L +W)

Molly is multiplying each dimension by 2 : 2(2x+4) + 2(x-1/2) and Noah is also multiplying the two dimensions by 2 using the rewritten formula above.

The answer is C.Molly and Noah