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.
How many times does 0.30 fit in 0.90? Well, exactly 3 times since 9 is 3 times more than 3!
Hope this helps!
Answer:
116.6 pounds
Step-by-step explanation:
Set up a proportion where x is the weight of her desk in pounds:
= 
Cross multiply:
x = 116.6
So, her desk is 116.6 pounds
Answer:
242 Hamburgers, 374 Cheeseburgers
Step-by-step explanation:
Step 1: 616/2-66=242 Hamburgers
Step 2: 616-242=374 Cheeseburgers
Step 3: Check Work 242+374=616
Answer:
Step-by-step explanation:
If you are rounding to nearest tenth
2.6 1.9
Nearest hundredth
2.6 1.87
If the number to the right of the one you want to round is 5 or above, you go up a number. If it's below, you go down 1.
Hope this helps.