Mary charges $8.50 per hour to clean a house. If she works 21 hours, how much
does she earn in one week? Choose the correct choice from the following answers.
A) $612.50
B) $278.50
C) $178.50
D) $418.50
E) $312.50
Multiply 21 hours x $8.50 =   Answer: $178.50   correct answer $178.50
<result>C</result>
Mary charges $8.50 per hour to clean a house. If she works 21 hours, how much
does she earn in one week?