Question 341010
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 with have in X weeks.
G's amt = 10x + 100
:
b.)Write an expression that represents the amount of money that Karyn will have in X weeks.
K's amt = 310 - 20x
:
c.)How many weeks will it take until Glenn and Karyn have the same amount of money?
Just make the two expressions equal to each other, and solve for x
10x + 100 = 310 - 20x
10x + 20x = 310 - 100
30x = 210
x = {{{210/30}}}
x = 7 weeks, they will have an equal amt in the bank
:
:
You can prove this, replace x with 7 and find the amount each has
G: 10(7) + 100 = 170
K: 310 - 20(7) = 170 also