Final answer:
Mary Ann can save 10% of her monthly after-tax income, which is $258.91, because her expenses amount to $2,145, leaving her with $444.10 after expenses.
Step-by-step explanation:
The student named Mary Ann wants to save 10% of her monthly after-tax income of $2,589.10. To calculate her savings, let's first determine 10% of her income:
10% of $2,589.10 = 0.10 × $2,589.10 = $258.91
Next, let's subtract her monthly expenses from her income to see if she can save the desired amount:
Total monthly expenses = $790 (rent) + $75 (cell phone) + $45 (utilities) + $65 (cable TV and internet) + $450 (groceries) + $250 (entertainment) + $350 (car payment) + $120 (gasoline) = $2,145
Monthly income after expenses = $2,589.10 - $2,145 = $444.10
Since Mary Ann's income after expenses ($444.10) is greater than her desired savings ($258.91), she can indeed save 10% of her income each month.