Simplify using positive exponents.

Please and thank you!

You have 138.72 in your saving account u take out 45.23 and 18.00 you deposit 75.85 into your account

If mary had 320 toy cars and she gave her friend 50 cars and then she gave her brother 72 more cars how much toy cars would mary have left ● explain with proper details

12 3 4 5 6 7 8 9 10time remaining01: 24: 54which graph represents this system? y=1/2x + 3 y= 3/2x -1