Question

The work of a student to find the dimensions of a rectangle of area 8 + 16x and width 4 is shown below:


Step 1: 8 + 16x

Step 2: 4(4) + 4(12x)

Step 3: 4(4 + 12x)

Step 4: Dimensions of the rectangle are 4 and 4 + 12x



In which step did the student first make an error and what is the correct step? (1 point)


Step 3; 4 + (4 + 12x)

Step 3; 4 + (4 ⋅ 12x)

Step 2; 4(2) + 4(4x)

Step 2; 4(2) + 4x(2)

Answer 1

area=width*length
you are given this
8+16x=4*(length)

Answer 2

you are asked to find the length