Question

WILL FAN AND MEDAL!!
The graph below shows the value of Edna's profits f(t), in dollars, after t months:
What is the closest approximate average rate of change for Edna's profits from the 18th month to the 21st month?

Three dollars per month
Nine dollars per month
13.75 dollars per month
41.25 dollars per month

Answer 1

@Hero @hhelpplzzzz @Kainui @iGreen @TheSmartOne @TheRaggedyDoctor @Luigi0210 @HelpBlahBlahBlah @nuccioreggie

Answer 2

@ParthKohli @Nnesha @Luigi0210 @Phebe @uri @urbanmorgans @Australopithecus @sammixboo

Answer 3

Generally when you are doing a linear approximation you want the line to touch or be as close to as possible the graph or points in the graph to get a better approximation

Answer 4

Just do a linear approximation of the slope, you should notice that inbetween the 18th and 21st months the graph is almost linear thus just use the two end points of the line in the formula for the slope of a line

slope = (y2 - y1)/(x2-x1)