If Marcus's salary of $4,000 per month is increased by 14%, what is her new monthly salary?
First, calculate the increase in Marcus's salary:
Increase = $4,000 * 0.14 = $560
Then, add the increase to the original salary to find her new monthly salary:
New salary = $4,000 + $560 = $4,560
Therefore, Marcus's new monthly salary is $4,560.