D) it depends what n is.

If n=2:

9n=18 -> (1, 18; 2, 9; 3, 6) = 2,3

8n=16 -> (1, 16; 2, 8; 4, 4) = 2

If n=3:

9n=27 -> (1, 27; 3, 9) = 3

8n=24 -> (1, 24; 2, 12; 3, 8; 4, 6) = 2,3 a) y=2lx-1l is lxl shifted to the right by 1, and stretched vertically by a factor of 2. Domain: all real numbers.

b) y=100-900x is a line with slope -900, y-cept=100, and x-cept=1/9. Domain: all real numbers

c) y=5-(x+20)^2 is a parabola pointing down with vertex (-20,5), y-cept=-395, x-cept=-20+/-sqrt(5). Domain: all real numbers

d) y=(x+2)^1/2 is a half parabola opening to the right with vertex (-2,0), x-cept=-2, y-cept=sqrt(2). Domain: numbers >= -2.

e) y=x+lxl. For x>=0, y=2x. For x<0, y=0. Two lines, one is y=2x, and second is along x-axis for x<0. Domain: all real numbers. 1) (n-1)/3 is an integer, so n could = 4, 7, 10, 13, 16, ...

2) (n+1-1)/2 = n/2, so n must be even. Revise 1) to include n = 4, 10, 16, ...

A) What is remainder when (n-1)/6?

If n=4, (4-1)/6=3/6=3.

If n=10, (10-1)/6=9/6=1 3/6.

So A) 3 and B) 3, therefore C is correct.