4.
Evaluate the expression 3b−ac when a = 2, b =3, and c=−1.5.
12
-5
-15.5
24
To evaluate the expression 3b - ac with a = 2, b = 3, and c = -1.5, substitute the values into the expression.
3(3) - (2)(-1.5)
9 - (-3)
9 + 3
12
Therefore, the expression evaluates to 12.