Evaluate the expression 3b-ac when a=-2, b=3, and c=0.5.

Answer 1

To evaluate the expression $3b-ac$ with the given values $a=-2$, $b=3$, and $c=0.5$, we can substitute the values into the expression:

$$3b-ac=3(3)-(-2)(0.5)$$

Calculating $3(3)$:

$$3(3)=9$$

Next, calculate $(-2)(0.5)$:

$$(-2)(0.5)=-1$$

Thus, we have:

$$3b-ac=9-(-1)$$

This simplifies to:

$$9+1=10$$

Therefore, the value of the expression $3b-ac$ is $\boxed{{\displaystyle 10}}$.