To find out how much Zekial deposited on Friday, we can set up the following equation based on his account balances:
Let \( x \) be the amount he deposited on Friday.
On Thursday, his balance was -$168. After the deposit on Friday, his balance became $276. So, we can express this situation with the equation:
\[ -168 + x = 276 \]
Now, we will solve for \( x \):
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Add 168 to both sides: \[ x = 276 + 168 \]
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Calculate the right side: \[ x = 444 \]
Therefore, Zekial deposited $444 on Friday.