Answer:
y = $1,000/car x + $40,000
20 cars
Step-by-step explanation:
Let
x = number of cars sold
y = total earnings
The relationship between y and x can be expressed through a linear equation.
y = mx + b
where,
m is the slope
b is the y-intercept
The slope is how much she earns per car sold, that is, the commission of $1,000/car (I think you meant this number instead of $1,00).
The y-intercept is what she earns even if she does not sell any car, i.e. a salary of $40,000.
The resulting equation is
y = $1,000/car x + $40,000
If she is to make $60,000 in one year (y = $60,000), the number of cars sold is:
$60,000 = $1,000/car x + $40,000
$20,000 = $1,000/car x
x = 20 car
