To determine the correct inequality, we need to consider how many additional candles Mark needs to buy.
Mark currently has 2 candles and needs at least 7 candles in total. Let \( x \) represent the number of candles he buys.
The equation representing the total number of candles he will have is:
\[ x + 2 \geq 7 \]
This simplifies to:
\[ x \geq 7 - 2 \] \[ x \geq 5 \]
So, he needs to buy at least 5 candles.
The correct inequality from the options given is:
x + 2 ≥ 7
This represents that the total number of candles (the candles he buys plus the 2 he already has) must be at least 7.