Ruth Moore has just started work in the customer service department of a large department store. She works the following hours in her first week:
I
Monday 9 1/4,
Tuesday 84.
Wednesday 8.
Thursday 11, and
Friday 8.
Her company pays her time and a half for any hours over eight she works in a day. Her regular
hourly rate is $14.50.

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

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