You've found the prime factorization when all of your factors are prime. They can't be divided into any smaller factors.
Women can be seated in 89 ways.
Let Sn be the number of possible seating arrangements with n women. Consider n≥3 and focus on the rightmost woman. If she goes back to her seat, then there are Sn−1 ways to seat the remaining n−1 women. If he is sitting in the penultimate seat, then the woman who was sitting there before must now sit in the rightmost seat.
This gives us Sn−2 ways to seat another n−2 woman, so we get the recursion Sn=Sn−1+Sn−2. Starting with S1=1 and S2=2 we can calculate S10=89.
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The answer is 18.
I hope this helps :D
Simply solve for x. Divide both sides by -3. Since you are dividing by a negative, flip the inequality sign. This gives you x<-2.
Note that the answer is x is less than or equal to -2. I am unable to insert the correct symbol on my keyboard.
