Apparently, we use "Permutation" when order doesn't matter. In that way, only possible outcomes can be calculated.
P (n, r) = n! ( (n - r)!
Unlike, We use "Combination" when order does matter. Combination gives us all possible values.
C (n, r) = n! / (n - r)! r!
Hope this helps!
243 + 62-28 = n
243 + 34 = n
277 = n
n= 277
Koalagirl133 I think this is the answer I don't know if it is 9,540,000× 10 = 94, 500, 000
Answer:
It would be B (15x + 20x)
Check the picture below
notice, the run is half 35
recall slope = rise/run