Question

Each week Marissa withdraws the same amount from her bank account the equation 

A=1550-90w represent the relationship between the amount of money remaining in her account ,A,in dollars , and the number of weeks of withdraws ,W. 

For how many weeks has Marissa made withdraws when the amount remaining in the 
account is $110??

A)14
B)16
C)17
D)18 

Answer 1

Fill in your remaining amount (110) in a because a is your remaining amount.

Solve for w(weeks):

110=1550-90w Subtract 1550 on both sides of the equal sign to get:

-1440=-90w Now do the inverse operation and divide -90 on both sides to get:

16= w

So the answer is 16 weeks