Answer:
7
Step-by-step explanation:
B
A doesn't repeat at allB just repeats on the 3C repeats on the 1 and 3D repeats on the 5, 1, and 3
9x-y = 5
Equation of line in slope intercept form:
y-y1 = m*(x-x1), m=9, (x1,y1)=(4,31)
y-31 = 9*(x-4)
y-31 = 9x-36
9x-y = 36-31