Anita incorrectly wrote the equation z = w – 18 to describe the pattern in the table. Choose the best description of Anita’s error.

Graph:
w 3 5 7 9
z 27 45 63 81

A. Anita only compared the values of w to z.
B. Anita only compared the values of z to w.
C. Anita only compared the values in the row for w.
D. Anita only compared the values in the row for z.

a

step-by-step explanation:

the answer is a

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.

there are infinitely many solutions.