Open ended help, please!

[badwithmath]

I do not know how to do this, please someone help me out, and if you can please explain and show work and such!
okay here it is:
Karyn has saved $310.00, but needs to withdraw $20.00 per week to help meet her expenses. Glenn has $100.00 saved and adds $10.00 a week.

a.)Write an expression that represents the amount of money Glenn will have in X weeks.
b.)Write an expression that represents the amount of money Karyn will have in X weeks.
c.)How many weeks will it take until Glenn and Karyn have the same amount of money?

That's all. It's probably not as hard as I think, but I forget how to do it. Again any work shown would be amazing! Thank You!

 

[Denis]

Karyn has saved $310.00, but needs to withdraw $20.00 per week to help meet her expenses. Glenn has $100.00 saved and adds $10.00 a week.

a.)Write an expression that represents the amount of money Glenn will have in X weeks.

100 + 10X

b.)Write an expression that represents the amount of money Karyn will have in X weeks.

310 - 20X

c.)How many weeks will it take until Glenn and Karyn have the same amount of money?

100 + 10X = 310 - 20X
Solve for X

 

[tkhunny]

as hard as I think

There's your problem, right there.

I forget how to do it.

No, wait, that's the problem.

I do not know how to do this,

Check that. Here's the problem.

jk The REAL problem is your screen name.

Really, why don't you quit beating yourself up?! Spend NO time telling yourself you can't do it and spend ALL your study time figuring it out!

Karyn has saved $310.00, but needs to withdraw $20.00 per week to help meet her expenses.
Glenn has $100.00 saved and adds $10.00 a week.

a.)Write an expression that represents the amount of money Glenn will have in X weeks.
b.)Write an expression that represents the amount of money Karyn will have in X weeks.
c.)How many weeks will it take until Glenn and Karyn have the same amount of money?

X is the requested number of weeks
a) 100 + 10*X - Done. Learn how to use the symbols.
b) 310 - 20*X - Done. Learn how to use the symbols.
c) 100 + 10*X = 310 - 20*X - Solve for X. Learn how to manipulate the symbols.