Evaluate the expression `3b-ac` when `a\ =\ 2`, `b\ =3`, and `c=-1.5`.

Question

12
-5
-15.5
24

Answer 1

To evaluate the expression, we substitute the given values of `a`, `b`, and `c` into the expression `3b-ac`:

`3b-ac = 3(3) - 2(-1.5)`

Simplifying,

`3b-ac = 9 + 3`

`3b-ac = 12`

Therefore, the value of the expression `3b-ac` when `a = 2`, `b = 3`, and `c = -1.5` is 12.