A small school employs 5 teachers who make between $40,000 and $70,000dollar sign, 70, comma, 000 per year. The newest teacher, Valerie, decides to teach part-time which decreases her salary from \$40{,}000$40,000dollar sign, 40, comma, 000 to \$20{,}000$20,000dollar sign, 20, comma, 000 per year. The rest of the salaries stay the same. How will decreasing Valerie's salary affect the mean and median?

(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

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point