SOLUTION: 31. A union chaarges monthly dues of $4.00 plus $.15 for each hour worked during the month. Aunion member's dues for March were$29.20. How many hours did the union member work duri

Algebra ->  Human-and-algebraic-language -> SOLUTION: 31. A union chaarges monthly dues of $4.00 plus $.15 for each hour worked during the month. Aunion member's dues for March were$29.20. How many hours did the union member work duri      Log On


   

Question 53543: 31. A union chaarges monthly dues of $4.00 plus $.15 for each hour worked during the month. Aunion member's dues for March were$29.20. How many hours did the union member work during the month of March?
32. A technical information hotline charges a customer $15.00 Plus $2.00 per minute to answer questions about software. How many mintues did a customer who received a bill for $37 use this service? these two problems are on page 111
Answer by checkley71(8403) About Me  (Show Source):
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4.00+.15X=29.20 OR .15X=29.20-4.00 OR .15X=25.20 OR X=25.20/.15 OR X=168 HOURS WORKED DURING THE MONTH OF MARCH.
PROOF 4.00+.15*168=29.20 OR 4.00+25.20=29.20 OR 29.20=29.20
15.00+2.00X=37.00 OR 2.00X=37.00-15.00 OR 2.00X=22.00 OR X=11 MINUTES
PROOF 15.00+2.00*11=37.00 OR 15.00+22.00=37.00 OR 37.00=37.00