You deposit 50 and the week later you withdraw 20 write it as a integer

f the bank account is empty, the balance can be represented by 0. If she deposits $50 into the account when the balance is 0, this represents a gain of $50 that we represent with the positive integer 50.

Step-by-step explanation:

Part A: The average is 81% in Math class after 2 tests.

Part B: The average is 83% in Science class after 2 tests.

Part C: Science had the higher average after completing for test 4.