# Algebra

posted by .

I am cramming for an examine. I can not locate one of my graded lessons with all my notes. I am trying to redo the equaitons. I am really stuck on how to simplify this one.

Problem:

Studies indicate that the price elasticity of demand for cigarettes is about 0.4. If a pack of cigarettes currently costs \$2 and the govenment wants to reduce smoking by 20 percent, by how much should the government increase the price?

The teacher wrote this out for the answer. I am not clear on how it is simplified to come down to the answer on 3.33

P2-2```2(P2-2)
_____= _______=0.5
(P2+2)``P2+2

2P2-4=0.5P2+1

1.5P2=5

P2=3.33

## Similar Questions

1. ### english

Im completly lost in this one. Im suppose Answer the following: Punctuating Sentences Without a doubt, cramming for the test. my answer> Without a doubt; I study to extend of cramming the test. Just to clarify... my answer> Without …

3. ### Intermediate Algebra Simplify

Simplify: this is a triple decker fraction 1/a + 1/c divided by a^2 - c^2 divided by ac I am stuck on this one please help.
4. ### Algebra One

Can I simplify this at all our expand it or something -2(14x)+2(7x) is it just really -18x + 14 x ?

I'm really stuck on these problems- Simplify 6xy(3xy)^-2?
6. ### Algebra I

Hi, I would like someone to explain to me the process to get to the answer of these questions. (The answers are in the back of the book, but I don't understand how to get them myself): QUESTION ONE Warren has 40 coins (all nickels, …
7. ### Algebra II

Please help! I am stuck on this one. Need to simplify the expression. Assuming all variables are real numbers. ∛(27(x+2)^3) my answer =3x+6 not sure is this is correct.
8. ### Physics

PLEASE HELP, I'm trying to study for a quiz >.< and I don't understand this one question! A fellow student reports his measurements of time for a speed calculation in minutes. How could he express that calculation using SI base …
9. ### algebra

How do I state which property of exponents justifies each step of this simplification?
10. ### Algebra

I can't recall how to simplify square roots and am stuck on the following problem: (-3a)x = √7x+3 x = -1/4 I am trying to solve for a (since this is part of a group of questions that feed of previous answers, I'm absolutely at a …

More Similar Questions