Shawn makes bracelets using stone beads. He buys the beads for $0.30 each. The wire used to make each bracelet costs $0.10. a. Write an equation to find the cost (C) to make a bracelet with b beads. 1

let the number of beads be b

then cost of bracelet C is = $0.10 +b$0.30

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18