The given system of equations models the coins in a jar containing n nickels, d dimes, and q quarters. which statement is modeled by one of the equations in the system?

"There are a total of 36 coins in the jar" -- third option

Step-by-step explanation:

First answer choice is wrong (look at meaning of first equation)

Second answer choice is also wrong (look at meaning of second equation)

Third answer choice is correct as it matches the third equation.

Fourth answer choice is wrong since nowhere is says that.

(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