The cost of plating a rectangular jewelry box is $125, the cost of plating a similar box that is 8 times the size will be given by:
Cost=(scale factor)*(price)
Cost=125×8
Cost=$1000
Answer:$1000
Total amount of fencing
= 4x + 3(3x + 1)
= 4x + 9x + 3
= 13x + 3