To getyour answer, just divided 3.24 by 12. You will get 0.27. So the answer is each pencil costs 27 cents or 0.27.
We can calculate the percent change dividing the change by the original amount of people attending the exhibit.
The increase is 298-152 = 146.
Then, we can calculate the percent change as:

There was a 96% increase in the number of people attending the exhibit.
The answer is B let me know if this helps ok.
Answer:

Step-by-step explanation:
Solve for h, means that you have <em>to clear</em> h.
We have the expression 
We can divide both sides of the equation in (a+b):

Now divide again both sides of the equation in 12.

Observation: Distributive property:
, then: 
The answer is: 