Answer: B. about $152
Explanation:
Given : Karita had $138.72 in her checking account .
i.e. Original amount in bank account=$138.72
She wrote checks for $45.23 and $18.00.
Thus, amount remains in her account=


Therefore,amount remains in her account=$75.49
Now, she made a deposit for $75.85 into her account.
⇒Money in Karita's account=

∴The best estimate for money is in Karita's account=$152