anonymous one year ago 4x + 1 over 3y2 What is the value of the expression above when x = 2 and y = 3? You must show all work and calculations to receive full credit.

1. Michele_Laino

substituting your numerical data into your expression, we get: $4x + \frac{1}{3}{y^2} = 4 \cdot 2 + \frac{1}{3} \cdot {3^2} = ...$

2. Michele_Laino

here, we have to compute the power, first

3. anonymous

can u sum it down a little im smart just not that smart

4. Michele_Laino

ok! next step is: $4x + \frac{1}{3}{y^2} = 4 \cdot 2 + \frac{1}{3} \cdot {3^2} = \left( {4 \cdot 2} \right) + \left( {\frac{1}{3} \cdot 9} \right) = ...?$

5. anonymous

um what do i have to do

6. Michele_Laino

you have to do multiplications first

7. anonymous

ok wht is the factors i use to multiply

8. Michele_Laino

first step: $$4 \cdot 2=...$$

9. anonymous

8

10. Michele_Laino

ok! then: ${\frac{1}{3} \cdot 9}=...?$

11. anonymous

um 1 x 9 is 9 3 x 9 is 27

12. Michele_Laino

|dw:1444233369417:dw|

13. anonymous

so 3 x 1

14. Michele_Laino

yes!

15. Michele_Laino

what is $$3 \cdot 1=...?$$

16. anonymous

3

17. Michele_Laino

finally, what is: $$8 + 3=...?$$

18. anonymous

11

19. Michele_Laino

20. anonymous

11

21. Michele_Laino

yes!

22. anonymous

thx ur awesome

23. anonymous

thx ur awesome

24. Michele_Laino

thanks! :)