Question

Evaluate 3x-2 if x=5.

6

17

13

15

Answer 1

13

Explanation:

To solve this problem, we need to use the substitution method - because we are given a value for x and asked to evaluate the expression.

Evaluate 3x - 2; x = 5

1. Substitute 5 in for x in the expression

3(5) - 2

2. Multiply

15 - 2

3. Subtract

13

Answer 2

`13`

Explanation:

The given expression is;

`3x-2`

We want to evaluate this expression when
`x=5`.

This means that, we substitute
`5` wherever we see
`x` in
`3x-2`

The expression will now be

`=3(5)-2`

This will simplify to be

`=15-2`

The final result is

`=13`

The correct answer C.