In the expression 2(10x) + 15y, x represents the number of hours Nina works in a week at her first job and y represents the number of hours she works in a week at her second job. The expression shows how much money Nina has earned this week. Which statement is true?
Answer
A
Nina has worked a total of x – y hours so far this week.
B
Nina works 15 hours a week at her first job.
C
Nina makes 20x dollars at her first job each week.
D
Nina makes $10 per hour at her second job each week.
Explanation
The term 2(10x) equals 20x, so Nina earns 20x dollars at her first job each week. The term 15y means she earns $15 per hour at her second job. Therefore, the true statement is that she makes 20x dollars at her first job each week.
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