So far this week, Jan has worked out on the treadmill more than 3 times as much as she did last week. She worked out no more than 240 minutes on the treadmill
this week. Could Jan have worked out 2 hours last week? (1 hr = 60 minutes)

(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

a: 1/6, j: 1/4

step-by-step explanation: you are welcome

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4

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step-by-step explanation:

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