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

Question

12
-5
-15
24

Answer 1

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

`3(3) - (2)(-1.5)`

Simplifying,

`9 + 3`

`= 12`

Therefore, when `a = 2`, `b = 3`, and `c = -1.5`, the expression `3b - ac` evaluates to `12`.

Answer 2

Which expression best represents the following statement?

The difference of 15 and twice a number `n`.

Answer 3

The expression that best represents the statement "The difference of 15 and twice a number `n`" is:

`15 - 2n`