D is not because you can not graph it.
569/x=100/18
multiply both sides of the equation
569=5.55556
now we divide
569/5.55556
102.42=x
18% of 569=102.42
X+y=8
multiply the first equation by 3 to get rid of x
3x+3y=24
3x+2y=14
subtract equation 1 from 2
y=10
substitute to find the value of x
x+10=8
x=-2
Ratio and Proportion Method
Since both are at the same rate, then ratio and proportion can be applied here
If $40000 = $860
Then $55000 =55000x(860/40000)
=$1182.50
Therefore the taxes which would be on $55000 is $1182.50
