I need help ASAP on a homework Problem, anyone?

rachael724

Junior Member
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Sep 14, 2005
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Hello this is my math question. I am having a problem with getting this problem started.

A vending machine contains dimes and quarters only. There are 4 more dimes than quarters. If x represents the number of quarters, write an algebraic expression in terms of x that represents the value of all the coins in the vending machine in cents. Simplify the expression.


PLEASE HELP!!!!!!!
 
rachael724 said:
Hello this is my math question. I am having a problem with getting this problem started.
A vending machine contains dimes and quarters only. There are 4 more dimes than quarters. If x represents the number of quarters, write an algebraic expression in terms of x that represents the value of all the coins in the vending machine in cents. Simplify the expression.
PLEASE HELP!!!!!!!
since quarters = x, then dimes = ?

2 quarters have value 2(.25); x quarters have value ?
 
I am so lost can you explain.......... this is probably a simple problem but I am having so much trouble figuring it out. In the end I will probably say duh!
 
rachael724 said:
A vending machine contains dimes and quarters only. There are 4 more dimes than quarters. If x represents the number of quarters, write an algebraic expression in terms of x that represents the value of all the coins in the vending machine in cents. Simplify the expression.
You are having trouble getting started because the problem statement already did it for you. Just go on from there, one piece at a time.

"If x represents the number of quarters"

x = # of Quarters

"There are 4 more dimes than quarters"

x + 4 = # of Dimes

"write an algebraic expression in terms of x that represents the value of all the coins in the vending machine in cents"

x*25 + (x+4)*10 = Value of all coins in the machine - in pennies

"Simplify the expression"

Oh, you do that part.
 
tkhunny said:
rachael724 said:
A vending machine contains dimes and quarters only. There are 4 more dimes than quarters. If x represents the number of quarters, write an algebraic expression in terms of x that represents the value of all the coins in the vending machine in cents. Simplify the expression.
You are having trouble getting started because the problem statement already did it for you. Just go on from there, one piece at a time.

"If x represents the number of quarters"

x = # of Quarters

"There are 4 more dimes than quarters"

x + 4 = # of Dimes

"write an algebraic expression in terms of x that represents the value of all the coins in the vending machine in cents"

x*25 + (x+4)*10 = Value of all coins in the machine - in pennies

"Simplify the expression"

Oh, you do that part.

pennies? So now do I have to solve for the value of coins in the machine?
 
x*25 + (x+4)*10

So now do I have to solve for the value of coins in the machine?

No. You don't have enough information to actually solve for the value. Just simplify x*25 + (x+4)*10.
 
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