4. Atsuko Murakami is going to trade in her 5-year-old car for a new car. A used-vehicle guide shows the average trade-in value is
$4,350, plus $ 100 for air-conditioning, and $50 for an automatic
transmission. She deducts $175 for excessive mileage. What is the
average trade-in value of her car?

4,325

Step-by-step explanation:

4350+100= 4450

4450+50= 4500

4500-175= 4325

the correct answer is option c.   3

step-by-step explanation:

points to remember

equation of the line with coordinates (x₁, y₁) and (x₂, y₂) is given by,

slope m = (y₂ - y₁)/(x₂ - x₁)

from the figure we can see a line with two coordinates given

to find the slope of given line

here   (x₁, y₁)   = (-1, -1 ) and (x₂, y₂) = (1, 5)

slope m = (y₂ - y₁)/(x₂ - x₁)

  = (5 - -1)/(1 - -1)

  = (5 + 1)/(1 + 1)

  = 6/2 = 3

therefore the correct answer is option c.   3