What does it mean to calculate with distribution and without it.

Question

this is my problem

You want to buy three books that are on sale at 20% off. The original prices of the books are $2.50, $4.95, and $6.00. How much will you save?

i already have the answer but i don't want to put it in the wrong box

help please!

Answer 1

distributive property
.8(2.5+4.95+6) can be distributed to
.8*2.5 +.8(4.95)+ .8(6)

Answer 2

ty