Rebecca gave the cashier $20 to pay for 3 tickets to a museum. The cashier gave her back $1.28 back in change. Each ticket cost the same amount. How much did each ticket cost?

6.24

Step-by-step explanation:

Take 20 and subtract 1.28. That gives you 18.72 which is how much it cost for all 3 tickets. Then divide the 18.72 by 3 and you get 6.24. So it costs 6.24 for each ticket. Hope that helps.

(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

bull

step-by-step explanation: