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Freshman Algebra One help; due tomorrow



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Mon Sep 08, 2008 7:15 pm
Tabithalillian says...



Ok here are some problems I need help with. Please dont give me the answer just a little help and some simple ways to figure it out!! here are the problems:

Write an algebraic expression for each verbal exprestion
15 decreased by twice a number

91 more than the square of a number

Evaluate each expression
11 with an exponent of 2

exelent condition books are sold for $2.50, fair condition books are sold for $0.50. Write an expression for the cost of buying e (exelent condition books) and f (fair condition books)


what are the factors in the algebraic expression 3xy?

*sorry I just feel so stupid and my parents cant help and my math teacher is a crappy teacher.
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Mon Sep 08, 2008 7:20 pm
ProfessorRabbit says...



Well, for the first two, you need to start by replacing "a number" with "x." Does that give you some place to start?

Just use a calculator to raise 11 to the 2nd power. ( Which is 11 squared, btw. )

As for the story problem, start with the basics:

e=2.5
f=0.5

The number of books you are buying is x.

I'm pretty good at math, if I do say so myself, but it's hard to type the expressions, sometimes.
Frylock, please, no books! I can't read; I'm not a loser!
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Mon Sep 08, 2008 7:24 pm
Tabithalillian says...



THANK YOU!
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