Evaluate the expression 3b−ac when a = 2, b =3, and c=−1.5.
To evaluate the expression 3b − ac when a = 2, b = 3, and c = -1.5, substitute the given values into the expression:
3(3) - (2)(-1.5)
= 9 - (-3)
= 9 + 3
= 12
So, the value of the expression 3b - ac when a = 2, b = 3, and c = -1.5 is 12.