Hello,
sorry, I haven't understood the question.
ANSWER D:
the probability must be defined for 4,6,8
P(4)=3
P(6)=4
P(8)=5
But probability must be <1
==> P(4)=3/12, P(6)=4/12 and P(8)=5/12
So 3/12+4/12+5/12=12/12=1
The equation 
represents the total cost, c, of buying x number of adult tickets and y number of child tickets.
Express 
Now divide this equation by 5:
Answer: correct choice is A
She is incorrect, she should’ve added 2 to both sides.
Write the correct equation. Direct variation problems are solved using the equation y = kx. When dealing with word problems, you should consider using variables other than x and y, you should use variables that are relevant to the problem being solved. Also read the problem carefully to determine if there are any other changes in the direct variation equation, such as squares, cubes, or square roots.
