Answered

What is the value of the expression below when [tex]z=7[/tex]?

[tex]3z - 3[/tex]

A. 12
B. 18
C. 21
D. 34



Answer :

To find the value of the expression [tex]\( 3z - 3 \)[/tex] when [tex]\( z = 7 \)[/tex], follow these steps:

1. Substitute the value of [tex]\( z \)[/tex] into the expression:
[tex]\[ 3z - 3 \quad \text{with} \quad z = 7 \][/tex]

2. Replace [tex]\( z \)[/tex] with 7:
[tex]\[ 3(7) - 3 \][/tex]

3. Perform the multiplication:
[tex]\[ 3 \times 7 = 21 \][/tex]

4. Subtract 3 from the product:
[tex]\[ 21 - 3 = 18 \][/tex]

Therefore, the value of the expression [tex]\( 3z - 3 \)[/tex] when [tex]\( z = 7 \)[/tex] is [tex]\(\boxed{18}\)[/tex].
The answer is 18

Plug in 7 for z: 3(7) - 3

Then multiply: 21 - 3

Then subtract: 21 - 3 = 18

Therefore the answer is 18