Question

The graph below shows the value of Edna's profits f(t), in dollars, after t months:

Answer 1

What is the closest approximate average rate of change for Edna's profits from the 18th month to the 21st month?

Answer 2

@SyedMohammed98

Answer 3

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

Answer 4

Can I get some help here pretty please?=)

Answer 5

@e.mccormick @mathstudent55

Answer 6

My guess is A?

Answer 7

The average rate of change over a section of a graph is found by getting the slope of the line that connects the two points.

Answer 8

Okay, so can you help me do that please @e.mccormick =)

Answer 9

That's what i'm having trouble with =)

Answer 10

At month 18, what is the proffits?

At month 21, what is the proffits?

That will give you two (x,y) points. Then you can use the slope formula \(\dfrac{y_2-y_1}{x_2-x_1}\).

Answer 11

Okay but as you can see by looking at the graph, you really can't see month 18, or 21 =)

Answer 12

18 is easy. It is right at 0. If you look at it carefully, 21 crosses somewhere between 41 and 49. The "easy" number there is 45. While not exact, that will make the rest simpler.

(18,0) and (21,45)

Answer 13

Okay, thank you, this has helped me so much =)

Answer 14

So what did you get for a slope on that?