Algebra I
posted by A .
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, dimes, and quarters) worth $4.05. He has 7 more nickels than dimes. How many quarters does Warren have?
QUESTION TWO
Find and simplify the sum of a^2(ab^3)^2, b^2(a^2b^2)^2
("^2" means "exponent of two" or "to the second power")
QUESTION THREE
Find and simplify the sum of
a(ab^2)^3 + (2a^2b^3)^2
QUESTION FOUR
Find and simplify the product of
a(ab^2)^3 x (2a^2b^3)^2
QUESTION FIVE
Show that 16^x times (4^x)^2 = (2^x)^8
I would really, really appreciate any help for any of the questions. I am trying so hard but I just don't get it!

1. Are you sure that is all the data you have? I can't solve without some relationship with quarters.
N = D + 7
25Q + 10D + 5N = 405
25Q + 10D + 5(D+7) = 405
2. (ab^3)^2 = a^2(b^6), assuming that only the b term is cubed. Power to a power is simplified by multiplying.
That should help you with the other problems too.
Respond to this Question
Similar Questions

question on a book assignment
hey everyone...i have to do this assignment for class and these are some really tough questions on the book Peace Like A River by Leif Enger 1)Family loyalty often prevails over "the law" Agree or disagree (and i have to use quotes … 
to kill a mockingbird
which details help the reaer understand that the jail house is a symbol of maycomb's resistance to progress? 
Math
A positive integer n is defined as a "prime interlude" if n1 and n+1 are both prime numbers. Which of the following is not a "prime interlude? 
Just a message(please read)
First of all I would like to thank everyone for helping me. The reason that I post my questions like I do is b/c they are multiple choice and all I'm looking for is to know if my answer is correct or not. If its not right then I would … 
Latin
Can someone help me to understand the step by step process of the five declensions? 
General
Please understand that I am not upset with anyone or whatever I just want to know something. I have some work to be checked and the regular tutors here say that "we will be happy to critque your thinking" right? 
English
Hello. Please help me understand the sentence: "I took my picture" (does it mean that I photographed myself or that I took it into my hands just like a book or a scarf). And if I photographed myself, is it possible to say "I took a … 
physics please explain
Why is the following situation impossible? 
math
Is it possible to set up a time to do a live chat with a tutor here? 
pre algebra help
9. how you would convert the repeating, non terminating decimal to a fraction?