The best-selling college statistics text, the thrill of statistics, sells 5 million copies every fall. some users keep the book, and some sell it back to the bookstore. suppose that 90% of all students who buy a new book sell it back, 80% of all students who buy a once-used book sell it back, and 60% of all students who buy a twice-used book sell it back. if a book has been used four or more times, the cover falls off, and it cannot be sold back.

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!

y=3n + 1

step-by-step explanation:

this is wrong because it says the second number is one less and i added one instead

i believe the answer is 323 ft

step-by-step explanation:

kekdkdkccc

so

step-by-step explanation:

kekdkckcldlx