Question

PLEASE HELP WITH THIS 3 QUESTIONS.... a) Sarah had a balance of $155 in her bank account at the start of the week. She withdrew $65.50 on Monday, $23.25 on Wednesday, and $26.45 on Thursday. On Friday she deposited $165.30. Write an expression that represents Sarah's spending. * b) Simplify your expression (using PEMDAS). How much money is in Sarah’s account at the end of the week? * c) Find the difference between Sarah’s bank account balance at the start of the week and her current balance. *

Answer 1

155 + 165.3 - 65.5 - 23.25 - 26.45

At the end of the week, she had a total of $205.10.

The difference between her starting balance and the current balance is -$50.1.

or

The difference between her current balance and starting balance is $50.1.

Explanation:

She had $155 dollars in the starting = +155

She withdrew $65.5 = -65.5

She withdrew another $23.25 = -23.25

She withdrew another $26.45 = -26.45

She deposited $165.3 = +165.3

The expression looks like:

155 + 165.3 - 65.5 - 23.25 - 26.45

We could simplify the expression:

155 + 165.3 - 65.5 - 23.25 - 26.45

=> 320.3 - 88.75 - 26.45

=> 320.3 -115.2

=> 205.1

At the end of the week, she had a total of $205.10.

Starting balance - Current balance:

=> 155 - 205.1

=> -$50.1

The difference between her starting balance and the current balance is -$50.1.

If it is Current Balance - Starting Balance:

=> 205.1 - 155

=> $50.1

The difference between her current balance and starting balance is $50.1.