SOLUTION: Lucy tutors students for $20 per hour. She spent $13 on an ad in the newspaper. The expression 20x – 13 can be used to find the amount Lucy earns for tutoring x students. How mu

Algebra ->  Customizable Word Problem Solvers  -> Finance -> SOLUTION: Lucy tutors students for $20 per hour. She spent $13 on an ad in the newspaper. The expression 20x – 13 can be used to find the amount Lucy earns for tutoring x students. How mu      Log On

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Question 961679:
Lucy tutors students for $20 per hour. She spent $13 on an ad in the newspaper. The expression 20x – 13 can be used to find the amount Lucy earns for tutoring x students. How much will Lucy earn if she tutors 9 students?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+20x+-+13+
+x+=+9+
+20%2A9+-+13+=+180+-+13+
+180+-+13+=+167+
$167 Lucy makes for tutoring 9 students