## anonymous one year ago MEDAL AND FAN PROMISED!!! PLZ HELP!!!

1. anonymous

f(x) = 2(3)x, Section A is from x = 0 to x = 1 and Section B is from x = 2 to x = 3

2. anonymous

can you help me find the rate of change @kiamousekia

3. idku

$$\large\color{black}{f(x)=2(3)^x}$$ Like this?

4. anonymous

yes

5. anonymous

\i need to find the rage of change

6. anonymous

with that formula

7. anonymous

@kiamousekia can u help me plz

8. idku

How would you normally find the slope between the slope between points $$\large\color{black}{(a,b)}$$ and $$\large\color{black}{(c,d)}$$ ? $$\large\color{black}{m=\dfrac{b-d}{a-c}}$$

9. idku

For section A, you need to find f(0) and f(1), and then the slope between (0,f(0)) and (1,f(1)).

10. anonymous

well i need 2 Find the average rate of change of each section.

11. anonymous

so ik that formula

12. anonymous

but i need help doing it

13. idku

ok, and tell me what is f(0)=? and f(1)=?

14. anonymous

(0,1)?

15. idku

$$\large\color{black}{f(x)=2(3)^x}$$ $$\large\color{black}{f(0)=2(3)^0=?}$$ $$\large\color{black}{f(1)=2(3)^1=?}$$

16. idku

(anything raised to power 0, is 1)

17. anonymous

so i need 2 answer that equasion

18. anonymous

Idk sorry

19. idku

yes, you need to answer my 2 last questions (those are your y-values of the 2 points, respectively) and then use the slope formula

20. anonymous

f(x) = 2(3)x, Section A is from x = 0 to x = 1 and Section B is from x = 2 to x = 3 this is what im asking tho i need to find them sepretly

21. idku

I know.

22. idku

You have to know the y-coordinates of the 2 points to find the slope, don't you?

23. anonymous

ok ok i got it now

24. idku

What is the y-coordinate when x=0? What is the y-coordinate when x=1?

25. idku

(recall that your function is $$\large\color{black}{f(x)=2(3)^x}$$ )

26. idku

plug in 0 for x, and then plug in 1 for x.

27. anonymous

so its 6 and there are no soulutions 2 the first 1

28. idku

$$\large\color{black}{f(x)=2(3)^x}$$ $$\large\color{black}{f(0)=2(3)^0=2\cdot1=2}$$ So the y-coordinate when x=0, is y=2

29. idku

Can you find the y-value when x=1? (do it same way I have done it)

30. anonymous

im so confused

31. idku

and im so sorry

32. anonymous

@Preetha @perl can you plz help