Homework Help: algebra- Please help

Posted by deedee on Wednesday, November 5, 2008 at 10:34am.

10)The formula b=30a is used in New England to estimate the minimum furnace output, b, in BTU's for a modern house with a square feet of flooring.
A) determine the minimum furnace output for a 2100 ft squared modern house.
B) solve formula for a
Answer:a) 630,000
b) unsure how to calculate

24)Translate the phrase into an algebraic expression.

Justin had $36 dollars before spending d dollars on jeans. How much money remains?
The translation is $_____
Answer: how can that even be calculated? There is not enough info

25)7/(4.3)
Answer: 30.1
7)use cummutative law to find and equivalent expression
73+yz
answer: I don't even know where to start with this one

36)Simplify
32xy over 56x
Answer:? no clue

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