Xavier is one year more than twice the age of Youji. Four years ago, Xavier was three times as old as Youji. Which system of equations below could be used to solve for x , Xavier's present age, and y , Youji's present age? X = 2y + 1 x + 4 = 3(y + 4) x = 2y + 1 x – 4 = 3(y – 4) x = 2(y + 1) x + 4 = 3(y + 4) x = 2(y + 1) x – 4 = 3(y – 4)

the correct answer is d

hope this

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.

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step-by-step explanation: