## Related questions with answers

Question

Read the question below, then fill in the correct answer.

Ten-packs of gum are on sale for $4, but there is a store limit of five packs per customer. The function$C(x)$gives the cost$C$for$x 10$-packs. Which of the following best represents the range of this function?

A.$\{4\}$B.$\{5\}$C.$\{0,1,2,3,4,5\}$D.$\{0,4,8,12,16,20\}$

Solution

VerifiedStep 1

1 of 2Since each 10-pack is $4, then$x$10-packs is$4x$dollars so$C(x)=4x$. Their is a store limit of 5 packs per customer so substitute$x=0$to$x=5$into$C(x)=4x

$to find the range: \begin{align*} C(0)&=4(0)=0\\ C(1)&=4(1)=4\\ C(2)&=4(2)=8\\ C(3)&=4(3)=12\\ C(4)&=4(4)=16\\ C(5)&=4(5)=20 \end{align*} The range is then$

{0, 4, 8, 12, 16, 20}$.

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