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

1 answer

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 \( \boxed{10} \).