## anonymous one year ago Can anyone help me with this ? Which of the following options is an equivalent function to f(x) = 2(5)2x? f(x) = 50x f(x) = 100x f(x) = 2(25)x f(x) = 4(25)x

1. anonymous

What are the steps to solve this ?

2. rishavraj

is it $2(5)^2x$????????

3. anonymous

yes @rishavraj

4. rishavraj

whts the value of $5^2$ ???

5. anonymous

25

6. rishavraj

and whts 25*2 ??

7. anonymous

50

8. rishavraj

u r done then 50x

9. anonymous

thanks so much !

10. anonymous

Could you help me with another one ?

11. rishavraj

yupppp

12. anonymous

For f(x) = 0.01(2)x, find the average rate of change from x = 3 to x = 8. 0.08 0.496 2.48 5

13. rishavraj

is x as exponent ..????i mean is it $0.01(2)x~~~or~~~0.1(2)^x$

14. anonymous

It's 0.1(2) ^x

15. rishavraj

avg = $\frac{ 0.1(2)^8 - 0.1(2)^3 }{ 8 - 3 }$

16. rishavraj

avg rate of change

17. anonymous

4.96?

18. rishavraj

oops it supposed to be 0.01

19. anonymous

The answer or something in the problem ?

20. rishavraj

its supposed to be $\frac{ 0.01 (2^8) - 0.01 (2^3)}{ 5 }$

21. anonymous

i got 0.496

22. rishavraj

is it in options??

23. anonymous

yes , is it the correct answer?

24. rishavraj

yup :))) go fo r it

25. anonymous

okay thanks :)

26. rishavraj

u r most welcome :))