SOLUTION: Jorge bought a mechanical pencil for $8. A lead and eraser refill pack costs $2. Write a linear function to describe the cost of using the pencil as a function of the number of

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Question 1173687: Jorge bought a mechanical pencil for $8. A
lead and eraser refill pack costs $2. Write a
linear function to describe the cost of using
the pencil as a function of the number of
refill packs.
A. 𝐶(𝑟) = 8𝑟 − 2
B. 𝐶(𝑟) = 2𝑟 + 8
C. 𝐶(𝑟) = 2𝑟
D. 𝐶(𝑟) = 8𝑟 + 2
Found 2 solutions by ewatrrr, Boreal:
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
Jorge bought a mechanical pencil for $8.
Alead and eraser refill pack costs $2
 

Hi,

Write a linear function to describe the cost of using the pencil 

as a function of the number of refill packs.

C(r) = 8 + 2r

Wish You the Best in your Studies.

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
the pencil is a fixed cost of $8.
B. C(r)=2r+8