The following table shows the length and width of two rectangles:

length width
rectangle a 3x + 2 2x − 1
rectangle b x + 5 5x − 1

which expression is the result of the perimeter of rectangle b minus the perimeter of rectangle a?
2x + 2
2x + 6
22x + 14
22x + 18

To my undertanding i think when you work it out it would be b

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)

Here for a good time of free question aha