Final answer:
To solve for the best amount of money Malcolm needs to deposit to avoid overdraft, set up the inequality 150.50 + x >= 0, where x represents the deposit amount. Simplify the inequality by subtracting 150.50 from both sides to find that Malcolm needs to deposit at least $150.50.
Step-by-step explanation:
To solve for the best amount of money Malcolm needs to deposit to avoid overdraft, we can set up an inequality using Malcolm's current balance and the amount he wrote a check for.
The amount Malcolm has in his checking account is $150.50. He wrote a check for $150.50, so we can set up the inequality as:
150.50 + x >= 0
Where x represents the amount of money Malcolm needs to deposit.
To simplify the inequality, we can subtract 150.50 from both sides:
x >= -150.50
This means that Malcolm needs to deposit at least $150.50 to avoid overdraft.