For the first part, in the question, it is given that , Joey pays $672 per year in insurance .
And 1 year = 12 months.
It means, Joey pays $672 for 12 months in insurance .
So his monthly budget should be
[tex] \frac{672}{12} = $ 56 [/tex]
Correct option is C .
In the second part, it is given that, The equation y = 1.55x + 110,419 approximates the total cost, in dollars, of raising a child in the united states from birth to 17 years, given the household's annual income, x .
So when annual income ,x, is 54000, we will get
[tex] y=1.55(54000)+110419 = 194119 [/tex]