evaluate the expression, if z = -5. |3z| - 7

Explanation:

Step1: Substitute z value

Substitute $z = - 5$ into $3z$. So, $3z=3\times(-5)=-15$.

Step2: Calculate absolute - value

Find the absolute - value of $3z$. Since $| - 15| = 15$.

Step3: Subtract 7

Subtract 7 from the absolute - value result. So, $|3z|-7=15 - 7=8$.

Answer:

8