That's what I did and since the zeros would be -5 and 3 the answer would be 3 since it can't be a negative
The answer is C.
Here's why, nPr = n!/(n-r)!. Plug in 7 for n and 3 for r. And you get 7!/(7-3)!.
Thus, 7!/4! = (7*6*5*4*3*2*1)/(4*3*2*1), which simplifies to 7*6*5 = 210
24. 8x3=24
12x2=24
It would be 6/24 (3/12) and 9/24 (3/8)
The answer to this question will be C
Y - 12 = -10
The answer is y = 2