Alexis reads 1/2 of a short story in five minutes. How many short stories could she read per hour?

6 stories

Step-by-step explanation:

1 hour = 60 minutes

We can use a ratio to solve

1/2 story       x story

 =

5 minutes        60 minutes

Using cross products

1/2 * 60 = 5 * x

30 = 5x

Divide each side by 5

30/5 = 5x/5

6 =x

b. the decimal could be two-tenths.

step-by-step explanation:

(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