Evaluate 17

Evaluate 2x+6y when x=- 4/5 and y=1/3. Write your answer as a fraction or mixed number in simplest form.

Correct answer:

z =  0.4

Step-by-step explanation:

$$\begin{gathered} x=-{\displaystyle \frac{4}{5}}=-{\displaystyle \frac{4}{5}}=-0.8 \\ y={\displaystyle \frac{1}{3}}\doteq 0.3333 \\ z=2\cdot x+6\cdot y=2\cdot (-0.8)+6\cdot 0.3333={\displaystyle \frac{2}{5}}=0.4 \end{gathered}$$

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