Answer:

Step-by-step explanation:
Let
x ----> represents the number of subscriptions she sells
f(x) ---->represent her paycheck amount for the week
we know that
The linear function in slope intercept form is equal to

where
m is the slope or unit rate of the linear function
b is the y-intercept or initial value of the linear function
In this problem we have that
The slope is equal to

The y-intercept is equal to
---> value of f(x) when the value of x is equal to zero
substitute

2, 4, 8, 12 are all common denominators because they can become the same denominator
Answer:
Each car takes about 9 minutes to be washed.
Answer:
do you want us to simplify it? or find the integral?