Question

Evaluate each expression if w = -3, x = 4, y = 2.6, and z = 1/3. Round to thenearest tenth if necessary.9z – 4y + 2w

Answer 1

SOLUTION

The given expression is

$9z-4y+2w$

Given that

$w=-3,x=4,y=2.6,z=\frac{1}{3}$

Substitute the value into the given expression, we have

$\begin{gathered} 9z-4y+2w \\ 9(\frac{1}{3})-4(2.6)+2(-3) \end{gathered}$

simplify the expression in the last line above

$\begin{gathered} 3-10.4-6 \\ -13.4 \end{gathered}$

Hence

The value for the expression is -13.4