Dale bought 6 CDs that were each the same price. Including sales tax, he paid a total of $98.40. Each CD had a tax of $1.10. What was the price of each CD before tax?
?

If you multiply the 6 to the $1.10 you get 6.60. Then subtract the 98.40 from the 6.60 and you get 91.80.

c. prove the lengths are the same.

step-by-step explanation:

you need to prove the segments are congruent. congruent segments have the same length. find the lengths of the segments using the distance formula, and compare them.

answer: c. prove the lengths are the same.