Question

7) Yael is 1 year older than Xavier. Zaire is one year older than Yael. Which formula can be used to figure out Xavier's age?

A: 3x = 48
B: X (x + 1) (x + 2) = 48
C: X + (x - 1) + (x - 2) = 48
D: X + (x + 1) + (x + 2) = 48

Answer 1

The correct algebraic expression to calculate Xavier's age, taking into account the ages of Yael and Zaire, is D: X + (x + 1) + (x + 2) = 48. The formula sums their ages to find the total age when combined.

Step-by-step explanation:

The question is asking for an algebraic formula that can express Xavier's age, given the information about ages in relation to one another. Let's designate X as Xavier's age. According to the problem, Yael is 1 year older than Xavier, and Zaire is 1 year older than Yael. This can be written as:

• Yael's age = X + 1
• Zaire's age = (X + 1) + 1 = X + 2

The correct answer is: D: X + (x + 1) + (x + 2) = 48.

This formula adds together the ages of Xavier, Yael, and Zaire. It represents a scenario where the sum of their ages equals 48.