Sasha has a coupon to a local store that gives her 15% off one item. If the item she buys costs ddollars, the amount she will be charged can be represented by this expression
0.850
Which of these is equivalent to the expression?

1 d+0.15d
2 d-0.15d
3 0.15d
4 1.15d

2

Step-by-step explanation:

If d was $10 then 10x.15= $1.50. Then you take 10-1.5 and get $8.50

(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