Final answer:
To evaluate the given expression 7x - 2y - 8z for x = -2, y = 3, and z = -4, substitute these values into the expression. Perform the operations to get to the solution, which is 12.
Step-by-step explanation:
To evaluate the expression 7x - 2y - 8z for x = -2, y = 3, and z = -4, we substitute these values into the given expression.
Following the substitution, the expression becomes: 7(-2) - 2(3) - 8(-4)
By executing the operations, we get: -14 - 6 + 32
The solution to this is 12.
Learn more about Evaluate Expression