Answer:

Step-by-step explanation:
Given:
Fixed salary earned by Jeanette per week = 
Additional amount earned by her for each sign she sells = 
To find: linear equation which represents her weekly pay based on the number of signs she sells.
Solution:
Let number of signs sold by Jeanette be x
So, her weekly pay = fixed pay + Additional amount earned by her for each sign she sells

In this question , we have to use compound interest formula, which is

Here Amount after 3 years = $133.10
Rate of interest = 10%=0.1
TIme =3 years
So we get

Now we have principal, P = $100,
Rate of interest, r =0.1
Time, t = 5 years
So we will get

So the balance after 5 years will be $161.05 .