SOLUTION: The cost of mailing a package depends on the weight of the package. Packages cost $1.09/lb to mail. a. Write a rule to describe the function. b. What is the cost of mailing a 4.

Algebra ->  Equations -> SOLUTION: The cost of mailing a package depends on the weight of the package. Packages cost $1.09/lb to mail. a. Write a rule to describe the function. b. What is the cost of mailing a 4.      Log On


   

Question 382401: The cost of mailing a package depends on the weight of the package.
Packages cost $1.09/lb to mail.
a. Write a rule to describe the function.
b. What is the cost of mailing a 4.5-lb package?
c. If you had a 9.2-lb package and a $20 bill, how much change would
you receive?
Answer by guitarheroguy(26) About Me  (Show Source):
You can put this solution on YOUR website!
Okay, let;s start with a,
let c equal cost, let l equal pounds
C=1.09l
Now, b,
1.09*4.5=4.905
So, it will cost $4.91, because we have to round up.
Finally, c,
1.09*9.2= 10.028
That's about 10 dollars
20-10=10
You will get 10 dollars change