expression for the story problem

Question

Becky made beaded necklaces. She put 8 beads on each necklace. She could use the expression 8 • n to represent the number of beads she used to make n necklaces. Which expression represents the number of beads Becky could use if she put 4 more beads on each necklace

Answer 1

If 8*n represents n necklaces each with 8 beads, the (8+4)*n = 12*n represents n necklaces each with 12 beads.