SOLUTION: In 2002, the price of mailing a letter was $.34 for the first ounce or part of an ounce and $.21 for each ounce or part of an ounce after the first ounce. Write a rule to describe

Algebra ->  Rational-functions -> SOLUTION: In 2002, the price of mailing a letter was $.34 for the first ounce or part of an ounce and $.21 for each ounce or part of an ounce after the first ounce. Write a rule to describe       Log On


   



Question 1065961: In 2002, the price of mailing a letter was $.34 for the first ounce or part of an ounce and $.21 for each ounce or part of an ounce after the first ounce. Write a rule to describe the function. How much did it cost to mail a 4-ounce letter?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +x+ = weight of the letter in ounces
Let +P+ = the price of mailing the letter in dollars
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+P+=+.34+%2B+.21%2A%28+x+-+1+%29+
( +x+%3E=+1+ )
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A 4-ounce letter costs
+P+=+.34+%2B++%28+4+-+1+%29%2A.21+
+P+=+.34+%2B+.63+
+P+=+.97+
It costs $.97