In the expression 2(10x) + 15y, x represents the number of hours Nina works in a week at a clothing store and y represents the n
umber of hours she works in a week as a babysitter. The expression shows how much money Nina has earned this month. Which statement is true? Nina has worked a total of x – y hours so far this month.
Nina works 15 hours a week at the clothing store.
Nina makes 20x dollars at the clothing store each week.
Nina makes $10 per hour babysitting each week.
The statement which is true in the choices is the third item in the choices such as "Nina makes 20x dollars at the clothing store each week". It was clearly stated in the given that x represent the total number of hours she worked in a week. This statement made the other items in the choices wrong.
