The value of given expression is 27.1
C is correct
Step-by-step explanation:
Given: ![\dfrac{1}{2}x^3+3.4y](/tpl/images/0407/4511/05587.png)
We are given an expression of two variable x and y.
We need to find the value of expression at x=3 and y=4
Put x=3 and y=4 into expression and simplify
![\Rightarrow \dfrac{1}{2}\cdot 3^3+3.4\times 4](/tpl/images/0407/4511/18db7.png)
![\Rightarrow \dfrac{1}{2}\cdot 27+13.6](/tpl/images/0407/4511/9e728.png)
![\Rightarrow \dfrac{27}{2}+13.6](/tpl/images/0407/4511/0c21a.png)
![\Rightarrow 13.5+13.6](/tpl/images/0407/4511/e1fc3.png)
Add both number
![\Rightarrow 27.1](/tpl/images/0407/4511/40e19.png)
Hence, The value of given expression is 27.1