Question

The work of a student to find the dimensions of a rectangle of area 8 + 12x and width 4 is shown below:

Step 1: 8 + 12x
Step 2: 4(4) + 4(8x)
Step 3: 4(4 + 8x)
Step 4: Dimensions of the rectangle are 4 and 4 + 8x

In which step did the student first make an error and what is the correct step?

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

Step 2; 4(2) + 4(3x)

Step 3; 4 + (4 + 8x)

Step 3; 4 + (4 ⋅ 8x)

Answer 1

@jim_thompson5910

Answer 2

its B right?

Answer 3

Yes you are correct again. Nice job.