## anonymous one year ago 3x + 1 over 4 y2 What is the value of the expression above when x = 3 and y = 4?

1. anonymous

2 is an exponent.

2. anonymous

@mathway @KatieKat16 @BrandonR

3. anonymous

Just substitute it. Make x = 3 and y=4.

4. anonymous

It would be 33+1/4 4(2)

5. anonymous

Not 33, but 3 times 3.

6. rishavraj

$\frac{ 3x + 1 }{ 4y^2 }$

7. anonymous

|dw:1438478877898:dw|

8. anonymous

4^2 means 4 times 4.

9. rishavraj

when x = 3 and y = 4 $\frac{ 3(3) + 1 }{ 4(4)^2 }$

10. anonymous

witch is 16

11. anonymous

and 3 times 3 is 9

12. anonymous

So 3*3 is 9, yes. Now add 1.

13. anonymous

10

14. anonymous

|dw:1438479187180:dw|

15. anonymous

What is 4 times 4?

16. anonymous

16

17. anonymous

Now multiply it by 4.

18. anonymous

64

19. anonymous

|dw:1438479520930:dw|

20. anonymous

That's it! Do you still need to simplify it?

21. anonymous

Nope

22. anonymous

Thank you :)