Answer:
1) Second option:
2) Third option: $14,500
Step-by-step explanation:
1) The equation of the line in Slope-intercept form is:
Where m is the slope and b is the y-intercept.
You know the point (20,7) of the line and you can observe in the graph that the y-intercept is:
Then, you can substitute these values into the equation
and solve for the slope "m":
Therefore, the equation of this line is:
2) To calculate the total cost of producing 50 engines, you need to substitute into the equation of the line . Then you get:
Since the y-axis represents the total cost "y" in thousands of dollar, then the total cost of producing 50 engines is:
$14,500