The details of the packages are not posted, however I can tell you how to find the answer.
First determine how many pencils are in each pack.
Then divide the price of the pack by the number of pencils to find out which pack has the least cost per pencil. To put this in equation form:
Whichever pack has the least cost per pencil is the one that is the best priced.
Answer:
The integer would -3.
Step-by-step explanation:
Think of it this way:
The elevator goes +7 (Positive = Up) and then -4 (Negative = Down). What is 7-4? That's easy it's just 3. But since the floor level goes down, <u>it would be negative.</u> So you just make it -3.
Check your work:
If we went up from the 4th floor by three, we would get up to the 7th floor.
Hope it Helps!
2 way table
cola water milk total
boy 12 4 16 32
girl 14 9 5 28
Total 28 13 21 60
Refer to the attached file.
Just replace cos2x with cos²x-sin²x
and work out.
I hope it helps u