<u>Explanation:</u>
Maria may not be able to retire at an earlier age. This is because she sacrifices here years of employment by not being economically productive. Her husband has to meet the family expenses single-handedly through his income. Lot of money is spent on child care so they will not be able to save money for their retirement.
To take an early retirement one should have saved quite an amount of money. This will increase the working years for her and her husband.
5x7+9
You would be using
P. Parentheses
E. Exponents
M. Multiplication
D. Division
A. Addition
S. Subtraction
Since in this problem multiplication comes before addition you would do that first,
5 multiplied by 7 is 35
35 plus 9 is 44
Your answer would be 44
If you have any more questions feel free to ask,
Hope this helps! :3